United States. Congress. Senate. Committee on Patents & ProQuest (Firm). (1873). [Bill for extension of patent to Alexander Douglas.]. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Congress. Senate. Committee on Patents and ProQuest (Firm). [Bill for Extension of Patent to Alexander Douglas.]. Washington: [publisher not identified], 1873.
MLA (9th ed.) CitationUnited States. Congress. Senate. Committee on Patents and ProQuest (Firm). [Bill for Extension of Patent to Alexander Douglas.]. [publisher not identified], 1873.
Warning: These citations may not always be 100% accurate.