APA (7th ed.) Citation

United States. Patent Office & ProQuest (Firm). (1862). Patent Office report for the year 1861 -- Mechanical. Letter from the Commissioner of Patents, transmitting the mechanical report of the Patent Office for the year 1861. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Patent Office and ProQuest (Firm). Patent Office Report for the Year 1861 -- Mechanical. Letter from the Commissioner of Patents, Transmitting the Mechanical Report of the Patent Office for the Year 1861. Washington: [publisher not identified], 1862.

MLA (9th ed.) Citation

United States. Patent Office and ProQuest (Firm). Patent Office Report for the Year 1861 -- Mechanical. Letter from the Commissioner of Patents, Transmitting the Mechanical Report of the Patent Office for the Year 1861. [publisher not identified], 1862.