APA (7th ed.) Citation

United States. Hydrographic Office. (1909). Pilot chart of Indian Ocean. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Hydrographic Office. Pilot Chart of Indian Ocean. Washington, D.C.: [publisher not identified], 1909.

MLA (9th ed.) Citation

United States. Hydrographic Office. Pilot Chart of Indian Ocean. [publisher not identified], 1909.

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