APA (7th ed.) Citation

United States. Patent Office. (1933). The official gazette of Patent Office, June 20, 1933. [s.n.].

Chicago Style (17th ed.) Citation

United States. Patent Office. The Official Gazette of Patent Office, June 20, 1933. [Washington]: [s.n.], 1933.

MLA (9th ed.) Citation

United States. Patent Office. The Official Gazette of Patent Office, June 20, 1933. [s.n.], 1933.