APA (7th ed.) Citation

United States. Congress. House. Committee on Patents, ProQuest (Firm), & United States. Patent Office. (1840). Letter from the Commissioner of Patents, transmitting statements of the operations of the Patent Office for the year 1839. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Congress. House. Committee on Patents, ProQuest (Firm), and United States. Patent Office. Letter from the Commissioner of Patents, Transmitting Statements of the Operations of the Patent Office for the Year 1839. Washington: [publisher not identified], 1840.

MLA (9th ed.) Citation

United States. Congress. House. Committee on Patents, et al. Letter from the Commissioner of Patents, Transmitting Statements of the Operations of the Patent Office for the Year 1839. [publisher not identified], 1840.