APA (7th ed.) Citation

U.S. Coast and Geodetic Survey. (1941). Supplement to United States Coast Pilot, Gulf Coast, Key West to the Rio Grande, Second (1936) Edition, Jan. 1941. [s.n.].

Chicago Style (17th ed.) Citation

U.S. Coast and Geodetic Survey. Supplement to United States Coast Pilot, Gulf Coast, Key West to the Rio Grande, Second (1936) Edition, Jan. 1941. [Washington]: [s.n.], 1941.

MLA (9th ed.) Citation

U.S. Coast and Geodetic Survey. Supplement to United States Coast Pilot, Gulf Coast, Key West to the Rio Grande, Second (1936) Edition, Jan. 1941. [s.n.], 1941.