APA (7th ed.) Citation

Orchester der Oper Zürich, Lind, E., Araiza, F., & Weikert, R. (1990). Opera duets. Philips.

Chicago Style (17th ed.) Citation

Orchester der Oper Zürich, Eva Lind, Francisco Araiza, and Ralf Weikert. Opera Duets. [S.l.]: Philips, 1990.

MLA (9th ed.) Citation

Orchester der Oper Zürich, et al. Opera Duets. Philips, 1990.