Micrologus

MLA

Guido d'Arezzo, and Joseph Smits van Waesberghe. Micrologus. American Institute of Musicology, 1955.

APA

Guido d'Arezzo, G. d'Arezzo, & Smits van Waesberghe, J. (1955). Micrologus. American Institute of Musicology.

Chicago

Guido d'Arezzo Micrologus. Edited by Joseph Smits van Waesberghe. : American Institute of Musicology, 1955.