APA (7th ed.) Citation

Metropolitan Opera Guild & Gruber, P. (1993). The Metropolitan Opera guide to recorded opera. Metropolitan Opera Guild : W.W. Norton.

Chicago Style (17th ed.) Citation

Metropolitan Opera Guild and Paul Gruber. The Metropolitan Opera Guide to Recorded Opera. New York: Metropolitan Opera Guild : W.W. Norton, 1993.

MLA (9th ed.) Citation

Metropolitan Opera Guild and Paul Gruber. The Metropolitan Opera Guide to Recorded Opera. Metropolitan Opera Guild : W.W. Norton, 1993.

Warning: These citations may not always be 100% accurate.