United States. Congress. Senate. Committee on Patents, ProQuest (Firm), & United States. Patent Office. (1840). Report from the Commissioner of Patents, showing the operations of his office during the year 1839. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Congress. Senate. Committee on Patents, ProQuest (Firm), and United States. Patent Office. Report from the Commissioner of Patents, Showing the Operations of His Office During the Year 1839. Washington: [publisher not identified], 1840.
MLA (9th ed.) CitationUnited States. Congress. Senate. Committee on Patents, et al. Report from the Commissioner of Patents, Showing the Operations of His Office During the Year 1839. [publisher not identified], 1840.
Warning: These citations may not always be 100% accurate.