APA (7th ed.) Citation

Bent, A. C. (1939). Life histories of North American woodpeckers: Order Piciformes. United States Government Printing Office.

Chicago Style (17th ed.) Citation

Bent, Arthur C. Life Histories of North American Woodpeckers: Order Piciformes. Washington: United States Government Printing Office, 1939.

MLA (9th ed.) Citation

Bent, Arthur C. Life Histories of North American Woodpeckers: Order Piciformes. United States Government Printing Office, 1939.

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