APA (7th ed.) Citation

United States. Department of Agriculture. (1929). Pocket guide to Alaska trees. GPO.

Chicago Style (17th ed.) Citation

United States. Department of Agriculture. Pocket Guide to Alaska Trees. [Washington]: GPO, 1929.

MLA (9th ed.) Citation

United States. Department of Agriculture. Pocket Guide to Alaska Trees. GPO, 1929.

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