APA (7th ed.) Citation

United States. Patent Office. (1900). Plan of classification of patented inventions. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

United States. Patent Office. Plan of Classification of Patented Inventions. Washington, D.C.: U.S. Government Printing Office, 1900.

MLA (9th ed.) Citation

United States. Patent Office. Plan of Classification of Patented Inventions. U.S. Government Printing Office, 1900.