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(en) Cristle Collins Judd, Reading Renaissance Music Theory: Hearing with the Eyes, Cambridge University Press, (ISBN978-0-521-02819-6, lire en ligne), p. 91-
(en) Peter Macardle, Confabulations: Cologne life and humanism in Hermann Schotten's Confabulations tironum litterariorum (Cologne, 1525), Durham Modern Languages, (ISBN978-0-907310-67-9, lire en ligne), p. 124
(la) Sebald Heyden, Adversus Hypocritas Calumniatores, super falso sibi inustam haereseos nota[m], de inversa cantilena, quae Salve regina incipit, Sebaldi Heiden defensio, Petreius, (lire en ligne)
(en) International Association of Music Libraries. United Kingdom Branch, Brio, The Branch, , 10–15 p. (lire en ligne)
(en) David Russell Williams et C. Matthew Balensuela, Music theory from Boethius to Zarlino: a bibliography and guide, Pendragon Press, (ISBN978-1-57647-157-9, lire en ligne), p. 106
(en) James Haar et Paul Edward Corneilson, The Science and Art of Renaissance music, Princeton University Press, (ISBN978-0-691-02874-3, lire en ligne), p. 178
(en) Anne Smith, The Performance of 16th-Century Music: Learning from the Theorists, Oxford University Press, (ISBN978-0-19-974262-2, lire en ligne), p. 29
(en) George Houle, Meter in music, 1600–1800: performance, perception, and notation, Indiana University Press, (ISBN978-0-253-21391-4, lire en ligne), p. 3
(la) Sebald Heyden, Paedonomia scholastica pietatis, studii literarij ac morum honestatis precepta continens, Montanus, (lire en ligne)