APA (7th ed.) Citation

Trenker, L. (1940). Sperrfort Rocca Alta: Von Luis Trenker. Knaur.

Chicago Style (17th ed.) Citation

Trenker, Luis. Sperrfort Rocca Alta: Von Luis Trenker. Berlin: Knaur, 1940.

MLA (8th ed.) Citation

Trenker, Luis. Sperrfort Rocca Alta: Von Luis Trenker. Knaur, 1940.

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