APA (7th ed.) Citation

United States Naval Observatory. (1851). Pilot chart of South Pacific Ocean. [publisher not identified].

Chicago Style (17th ed.) Citation

United States Naval Observatory. Pilot Chart of South Pacific Ocean. [Washington]: [publisher not identified], 1851.

MLA (9th ed.) Citation

United States Naval Observatory. Pilot Chart of South Pacific Ocean. [publisher not identified], 1851.

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