APA (7th ed.) Citation

U.S. Coast and Geodetic Survey. (1942). Supplement to United States Coast Pilot, West Indies, Puerto Rico and Virgin Islands, Fourth (1939) Edition, Sept. 1942. [s.n.].

Chicago Style (17th ed.) Citation

U.S. Coast and Geodetic Survey. Supplement to United States Coast Pilot, West Indies, Puerto Rico and Virgin Islands, Fourth (1939) Edition, Sept. 1942. [Washington]: [s.n.], 1942.

MLA (9th ed.) Citation

U.S. Coast and Geodetic Survey. Supplement to United States Coast Pilot, West Indies, Puerto Rico and Virgin Islands, Fourth (1939) Edition, Sept. 1942. [s.n.], 1942.