Cadman requiem :
for four male voices (alto, two tenors and baritone) two violas, cello and double bass (optional) /
Gavin Bryars.

APA Citation

Bryars, G. (1996). Cadman requiem: for four male voices (alto, two tenors and baritone) two violas, cello and double bass (optional). Mainz: Schott.

MLA Citation

Bryars, Gavin. Cadman Requiem: for Four Male Voices (alto, Two Tenors And Baritone) Two Violas, Cello And Double Bass (optional). Mainz: Schott, 1996.

Warning: These citations may not always be complete (especially for serials).