‡ denotes primary source study
‡ Summers, William John, and Peter M Lefferts (editors). 2016. English 13th-Century Polyphony (EECM 57).
Pages: pp. 32-39 & plates 179-309.
Notes: physical description, contents, bibliography.
Sanders, Ernest H. 2001. Worcester Polyphony. New Grove Dictionary of Music and Musicians, 560-563.
Sanders, Ernest H, and Peter M Lefferts. 2001. English Polyphony, 1270-1400, The Worcester Fragments. New Grove Dictionary of Music and Musicians, 878-879.
Thomson, Rodney. 2001. A Descriptive Catalogue of the Medieval Manuscripts in Worcester Cathedral Library. Woodbridge, Suffolk, & Rochester, NY: D.S. Brewer, for the Dean and Chapter of Worcester Cathedral.
Pages: xlvi, 167-8.
Thomson, Rodney. 2000. Newly Discovered Fragments of Music at Worcester Cathedral: A Preliminary Account. Interpreting and Collecting Fragments of Medieval Books: Proceedings of The Seminar in the History of the Book to 1500, Oxford 1998, 89-95. London: Red Gull Press.
Wibberley, Roger. 2000. Ave virgo mater dei: towards a Reconstruction. Plainsong and Medieval Music, 9: 41-49.
Malyshko, Olga E. 1998. Three Newly-Discovered Fragments at Worcester Cathedral: Another “Magnus Liber Organi” Flyleaf. Scriptorium, 52: 66-88.
Caldwell, John. 1994. Worcester-Fragmente. Musik in Geschichte und Gegenwart, Bärenreiter.
Losseff, Nicky. 1994. The Best Concords: Polyphonic Music in Thirteenth-Century Britain. New York: Garland.
Pages: 148-156.
Büttner, Fred. 1990. Klang und Konstruktion in der englischen Mehrstimmigkeit des 13. Jahrhunderts: Ein Beitrag zur Erforschung der Stimmtauschmotetten in den Worcester-Fragmenten. Tutzing.
Pages: 188-191.
Crocker, Richard L. 1990. XIV. Polyphony in England in the Thirteenth Century. The New Oxford History of Music, II: The Early Middle Ages to 1300, edited by Richard L Crocker, 679-720. Oxford.
Lefferts, Peter M. 1983. The Motet in England in the Fourteenth Century. Columbia University, New York, Ph.D. https://digitalcommons.unl.edu/musicfacpub/29/(Accessed: 4 June 2019).
Wibberley, Roger. 1977. English Polyphonic Music of the late-thirteenth and early-fourteenth centuries: a reconstruciton, transcription and commentary. University of Oxford, DPhil thesis, 2 vols.
‡ Dittmer, Luther A. 1960. Publications of Mediaeval Musical Manuscripts VI: Oxford Latin Liturgical D 20, London Add. Ms. 25031, Chicago Ms. 654 App. Publications of Mediaeval Music Manuscripts, vol. 6. Brooklyn: Institute of Mediaeval Music.
Apfel, Ernst. 1959. Studien zur Satztechnik der mittelalterlichen englischen Musik. 2 vols.
Pages: chapter 1 and opening of chapter 2 up to p. 63.
Dittmer, Luther A. 1959. Publications of Mediaeval Musical Manuscripts V: Worcester Add. 68, Westminster Abbey 33327, Madrid Bibl. Nac. 192. Publications of Mediaeval Music Manuscripts, vol. 5. Brooklyn: Institute of Mediaeval Music.
Harrison, Frank Llewellyn. 1958, second ed. 1963. Music in Medieval Britain. London: Routledge.
Pages: 132ff.
‡ Dittmer, Luther A (editor). 1957. The Worcester Fragments: A Catalogue Raisonné and Transcription, s.l. Musicological Studies and Documents, vol. 2. Neuhausen nr. Stuttgart: American Institute of Musicology.
Pages: introduction.
Dittmer, Luther A. 1957. The Dating and the Notation of the Worcester Fragments. Musica Disciplina, 11: 5-11.
Dittmer, Luther A. 1957. Auszug aus The Worcester-Music-Fragments.
Dittmer, Luther A. 1954. An English Discantuum Volumen. Musica Disciplina, 8: 19ff.
Pages: 29ff.
Dittmer, Luther A. 1953. Binary Rhythm, Musical Theory and the Worcester Fragments. Musica Disciplina, 7: 39-57.
Levy, K J. 1951. New material on the early motet in England. A Report on the Princeton MS. Garrett 119. Journal of the American Musicological Society, 4: 220-239.
Handschin, Jacques. 1949. The Summer Canon and its Background. Musica Disciplina, 3: 55-94, volume 5 (1951), 65-113.
Pages: II, 66ff.
Bukofzer, Manfred F. 1944. "Sumer is icumen in": A Revision. .
Reese, Gustave. 1940. Music in the Middle Ages: With an introduction on the music of ancient times. New York: W.W. Norton & Co.
Hughes, Dom Anselm. 1928. Worcester Mediaeval Harmony of the Thirteenth and Fourteenth Centuries. Burnham: Plainsong and Mediaeval Music Society.
Ludwig, Friedrich (editor). 1926-9. Guillaume de Machaut: Musikalische Werke, 1-3. Leipzig: Publikationen älterer Musik.
Pages: II, 34, 62.
Besseler, Heinrich. 1925. Studien zur Musik des Mittelalters: I. Neue Quellen des 14. und beginnenden 15. Jahrhunderts. Archiv für Musikwissenschaft, 7: 167-252.
Pages: I, 219ff.
Ludwig, Friedrich. 1923. Die Quellen der Motetten ältesten Stils. Archiv für Musikwissenschaft, 5: 185-222, Vol. 5 (1924) 273-315.
Pages: 191, 274.
Floyer, J K, and S G Hamilton. 1906. Catalogue of Manuscripts Preserved in the Chapter Library of Worcester Cathedral.
Pages: 110-111, 159-163.
Wooldridge, Harry Ellis, and H V Hughes (editors). 1897 and 1913. Early English Harmony from the 10th to the 15th Century. 2 vols. London: The Plainsong and Medieval Music Society.