APA (7th ed.) Citation

Warfel, H. E. (1950). Otter trawl explorations in Philippine waters. U.S. Govt. Print. Off.

Chicago Style (17th ed.) Citation

Warfel, Herbert Elmer. Otter Trawl Explorations in Philippine Waters. Washington: U.S. Govt. Print. Off, 1950.

MLA (9th ed.) Citation

Warfel, Herbert Elmer. Otter Trawl Explorations in Philippine Waters. U.S. Govt. Print. Off, 1950.

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