APA (7th ed.) Citation

Graf, M. (1955). Die Wiener Oper: Max Graf. Humboldt.

Chicago Style (17th ed.) Citation

Graf, Max. Die Wiener Oper: Max Graf. Wien [u.a.]: Humboldt, 1955.

MLA (8th ed.) Citation

Graf, Max. Die Wiener Oper: Max Graf. Humboldt, 1955.

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