Cita APA

Apel, W. 1., & Apel, W. 1. (1949). The notation of polyphonic music, 900-1600 (4. edition, revised and with commentary.). Cambridge, Massachusetts: The Mediaeval Academy of America.

Citación estilo Chicago

Apel, Willi 1893-1988, y Willi 1893-1988 Apel. The Notation of Polyphonic Music, 900-1600. 4. edition, revised and with commentary. Cambridge, Massachusetts: The Mediaeval Academy of America, 1949.

Cita MLA

Apel, Willi 1893-1988, y Willi 1893-1988 Apel. The Notation of Polyphonic Music, 900-1600. 4. edition, revised and with commentary. Cambridge, Massachusetts: The Mediaeval Academy of America, 1949.