APA (7th ed.) Citation

United States. Patent Office. (1939). The official gazette of Patent Office, [title page, contents, errata, etc, to] v. 498; Jan. 1939. [s.n.].

Chicago Style (17th ed.) Citation

United States. Patent Office. The Official Gazette of Patent Office, [title Page, Contents, Errata, Etc, to] V. 498; Jan. 1939. [Washington]: [s.n.], 1939.

MLA (9th ed.) Citation

United States. Patent Office. The Official Gazette of Patent Office, [title Page, Contents, Errata, Etc, to] V. 498; Jan. 1939. [s.n.], 1939.