APA (7th ed.) Citation

Josquin, d. P., Antonovych, M., Elders, W., & Dufay, G. (1969). Supplement. [G. Alsbach?].

Chicago Style (17th ed.) Citation

Josquin, des Prez, Myroslav Antonovych, W. Elders, and Guillaume Dufay. Supplement. Amsterdam: [G. Alsbach?], 1969.

MLA (9th ed.) Citation

Josquin, des Prez, et al. Supplement. [G. Alsbach?], 1969.