APA (7th ed.) Citation

United States. Patent Office. (1929). General information concerning patents. GPO.

Chicago Style (17th ed.) Citation

United States. Patent Office. General Information Concerning Patents. [Washington]: GPO, 1929.

MLA (9th ed.) Citation

United States. Patent Office. General Information Concerning Patents. GPO, 1929.

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