APA (7th ed.) Citation

United States. Army. (1931). Panama Canal: General information. Panama Canal.

Chicago Style (17th ed.) Citation

United States. Army. Panama Canal: General Information. [United States]: Panama Canal, 1931.

MLA (9th ed.) Citation

United States. Army. Panama Canal: General Information. Panama Canal, 1931.

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