APA (7th ed.) Citation

United States. Patent Office. (1913). Photographic copies. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Patent Office. Photographic Copies. Washington: [publisher not identified], 1913.

MLA (9th ed.) Citation

United States. Patent Office. Photographic Copies. [publisher not identified], 1913.

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