United States. Hydrographic Office. (1917). South Indian Ocean pilot: Islands westward of longitude 92 degrees east, including Madagascar and Comoro Islands. GPO.
Chicago Style (17th ed.) CitationUnited States. Hydrographic Office. South Indian Ocean Pilot: Islands Westward of Longitude 92 Degrees East, Including Madagascar and Comoro Islands. [Washington]: GPO, 1917.
MLA (9th ed.) CitationUnited States. Hydrographic Office. South Indian Ocean Pilot: Islands Westward of Longitude 92 Degrees East, Including Madagascar and Comoro Islands. GPO, 1917.
Warning: These citations may not always be 100% accurate.