Beata mater - 1a pars (of 3): Beata mater et innupta

Bibliography

Bent, Margaret, Ian D Bent, and Brian Trowell (eds.) 1970. John Dunstable complete works. Musica Britannica.  London. pp. 110.

Adler, Guido (ed.) 1894-1970. Denkmäler der Tonkunst in Österreich.  Graz and Vienna. pp. (14/15), 94-95.

Stainer, Cécie, Edward W. B. Nicholson, and John F. R. Stainer. 1901, 1913. Early Bodleian Music I-II (1901); Early Bodleian Music III. pp. (2), 98.

Harrison, Frank Llewellyn (ed.) 1963-. Early English Church Music.  London: Stainer & Bell. pp. (8), 8-9.