Cita APA (7a ed.)

Schuman, W. H. (1942). Four canonic choruses for mixed voices a cappella. G. Schirmer.

Cita Chicago Style (17a ed.)

Schuman, William Howard. Four Canonic Choruses for Mixed Voices a Cappella. New York: G. Schirmer, 1942.

Cita MLA (9a ed.)

Schuman, William Howard. Four Canonic Choruses for Mixed Voices a Cappella. G. Schirmer, 1942.