APA (7th ed.) Citation

Schweinfurth, U. (1978). Alaska - Frontier State der USA.

Chicago Style (17th ed.) Citation

Schweinfurth, Ulrich. Alaska - Frontier State Der USA. 1978.

MLA (9th ed.) Citation

Schweinfurth, Ulrich. Alaska - Frontier State Der USA. 1978.

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