Bent, Margaret, and Stanley Sadie. 2001. Notation. History of Western Notation. Polyphonic mensural notation. c1260-1500 . The New Grove Dictionary of music and musicians. Vol. 18: Nisard to Palestrina, 129-140. London: Macmillan.

Sadie, Stanley (ed.) 2001. The New Grove Dictionary of Music and Musicians [2nd Edition]. 29 vols. London.

Planchart, Alejandro Enrique. 1989. Tempo and Proportions. Performance Practice: 1. Music Before 1600, edited by Howard Mayer Brown and Stanley Sadie, 126–44. London: Macmillan Press.

Bent, Margaret. 1980. Old Hall MS. The New Grove Dictionary of Music and Musicians, 526-529.

Fischer, Kurt von. 1980. Paolo da Firenze. The New Grove Dictionary of Music and Musicians, 14: 165-166.

Macey, Patrick, and Jeremy Noble. 1980. Josquin des Prez. The New Grove Dictionary of Music and Musicians 2nd Edition, 13: 220-266.

Sadie, Stanley (ed.) 1980. The New Grove Dictionary of Music and Musicians.  London.