APA (7th ed.) Citation

Geological Survey. (1940). The Alaska Railroad (Ed. of 1940.). Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey. The Alaska Railroad. Ed. of 1940. [S.l.]: Geological Survey, 1940.

MLA (8th ed.) Citation

Geological Survey. The Alaska Railroad. Ed. of 1940. Geological Survey, 1940.

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