APA (7th ed.) Citation

Hartmann, R. (1977). Opera. W. Morrow.

Chicago Style (17th ed.) Citation

Hartmann, Rudolf. Opera. New York: W. Morrow, 1977.

MLA (9th ed.) Citation

Hartmann, Rudolf. Opera. W. Morrow, 1977.

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