APA (7th ed.) Citation

United States. Hydrographic Office. (1901). Specifications for 3-arm protractor. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Hydrographic Office. Specifications for 3-arm Protractor. [Washington]: [publisher not identified], 1901.

MLA (9th ed.) Citation

United States. Hydrographic Office. Specifications for 3-arm Protractor. [publisher not identified], 1901.

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