APA (7th ed.) Citation

United States. Hydrographic Office. (1941). Numerical Index for Station Catalogs, Jan. 1, 1941, Hydrographic Office Charts. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Hydrographic Office. Numerical Index for Station Catalogs, Jan. 1, 1941, Hydrographic Office Charts. [Washington]: [publisher not identified], 1941.

MLA (9th ed.) Citation

United States. Hydrographic Office. Numerical Index for Station Catalogs, Jan. 1, 1941, Hydrographic Office Charts. [publisher not identified], 1941.

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