APA (7th ed.) Citation

Civilian Conservation Corps (U.S.). Company 1640. Twin Hill billy. Company 1640.

Chicago Style (17th ed.) Citation

Civilian Conservation Corps (U.S.). Company 1640. Twin Hill Billy. Port Angeles, Wash.: Company 1640.

MLA (8th ed.) Citation

Civilian Conservation Corps (U.S.). Company 1640. Twin Hill Billy. Company 1640.

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