‡ denotes primary source study
Thomson, Rodney M. 2008. The Cambridge History of the Book in Britain, volume 2: 1100-1400, . edited by Rodney M. Thomson, Cambridge: Cambridge University Press.
Pages: p.164, n.137.
Taylor, A. 2002. Textual Situations: Three Medieval Manuscripts and Their Readers. Philadelphia.
Taylor, A, and Alan Coates. 1998. The Dates of the Reading Calendar and the Summer Canon. Notes and Queries, 243: 22-24.
Stevens, John E. 1996. Sumer is icumen in - A Neglected Context. Expedition nach der Wahrheit: Poems, Essays and Papers in Honour of Theo Stemmler, edited by John E. Stevens, Heidelberg: Winter.
Watson, Andrew G. 1979. Catalogue of Dated and Datable Manuscripts c.700-1600 in the Department of Manuscripts, the British Library. 2 vols. London.
Pages: vol.1, p.120 and vol.2, plate 137.
Davison, Archibald Thompson, and Willi Apel (editors). 1966. Historical Anthology of Music. Vol. I. Oriental, Medieval and Renaissance Music. Cambridge, Massachusetts.
Pages: nos. 41a, 41b and 42 (transcriptions of LoHa 1, 2 and 5).
Ker, Neil R. 1964. Medieval Libraries of Great Britain: A List of Surviving Books. Royal Historical Society Guides and Handbooks, vol. 3. London.
Pages: p. 156.
Harrison, Frank Llewellyn. 1958, second ed. 1963. Music in Medieval Britain. London: Routledge.
Pages: 135f, 143f (transcription of LoHa 5).
Gennrich, Friedrich. 1958. Bibliographie der ältesten französischen und lateinischen Motetten.
Pages: XXIX, XLVI etc.
Parrish, Carl. 1957. The Notation of Medieval Music.
Pages: pl. XLIII (facsimile of LoHa 5); 127ff.
Handschin, Jacques. 1949-79. Estampie. Die Musik in Geschichte und Gegenwart, 1st Edition, 3: .
Pages: col. 1557.
Handschin, Jacques. 1949. The Summer Canon and its Background. Musica Disciplina, 3: 55-94, volume 5 (1951), 65-113.
Pages: I and II.
Pirrotta, Nino. 1948. On the Problem of "Sumer is Icumen in". Musica Disciplina, 2: 205-216.
Pages: 205 ff.
Schofield, Bertram. 1948. The Provenance and Date of Sumer is Icumen in. Music Review, 9: 81-86.
Pages: 81 ff.
Bukofzer, Manfred F. 1944. "Sumer is icumen in": A Revision. .
Pages: 87 (binary transcription of LoHa 5).
Apel, Willi. 1942. (4th ed., 1949). The Notation of Polyphonic Music 900-1600. Cambridge, Massachusetts.
Pages: 247 (facsimile of LoHa f. 9).
Rokseth, Y. 1935+1939. Les Polyphonies du XIVe siecle. 4 vols.
Pages: I-II, no. 53 (facsimile and transcription of LoHa 4 after Mo); IV, 196, 261.
Anglès, Higinio. 1931. El Còdex musical de las Huelgas. 3 vols.
Pages: II-III, no. 101 (facsimile and transcription of LoHa 4 after Hu); I, 259.
Handschin, Jacques. 1931. Zur Leonin-Perotin Frage. Zeitschrift für Musikwissenschaft, 14: .
Pages: 516.
Ludwig, Friedrich. 1923. Die Quellen der Motetten ältesten Stils. Archiv für Musikwissenschaft, 5: 185-222, Vol. 5 (1924) 273-315.
Pages: 191, 203, 209, 214, 275, 305, 310.
Wolf, Johannes. 1918. Die Tänze des Mittelalters. Archiv für Musikwissenschaft, 1: 10ff.
Pages: 10ff (transcription of LoHa 1-3).
Ludwig, Friedrich. 1910. Repertorium organorum recentioris et motetorum vetustissimi stili. I. Catalogue raisonné. 1. Handschriften in Quadratnotation. Halle: Niemayer.
Pages: 180, 267ff, 392.
Aubry, Pierre. 1908. Cent Motets du XIIIe siècle. 3 vols.
Pages: I-II, no. 1 (facsimile and transcription of LoHa 4 after Ba).
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.
Pages: pl. 18-22 (complete facsimile of LoHa polyphony).
Kingsford, Charles L. 1890. The Song of Lewes. Oxford.
Wanley, Humphrey. 1808-12. A Catalogue of the Harleian Manuscripts in the British Museum. London.
Pages: vol.1, pp.488-489.