United States. Hydrographic Office. (1931). Table of distances between ports via shortest navigable routes as determined by Hydrographic Office, U.S. Navy Department. GPO.
Chicago Style (17th ed.) CitationUnited States. Hydrographic Office. Table of Distances Between Ports via Shortest Navigable Routes as Determined by Hydrographic Office, U.S. Navy Department. [Washington]: GPO, 1931.
MLA (9th ed.) CitationUnited States. Hydrographic Office. Table of Distances Between Ports via Shortest Navigable Routes as Determined by Hydrographic Office, U.S. Navy Department. GPO, 1931.
Warning: These citations may not always be 100% accurate.