APA (7th ed.) Citation

Gerlach, R. (1950). Die Fische. Claassen.

Chicago Style (17th ed.) Citation

Gerlach, Richard. Die Fische. Hamburg: Claassen, 1950.

MLA (9th ed.) Citation

Gerlach, Richard. Die Fische. Claassen, 1950.

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