APA (7th ed.) Citation

Patent Depository Library Program (U.S.). (1990). Design code manual for trademarks. The Program.

Chicago Style (17th ed.) Citation

Patent Depository Library Program (U.S.). Design Code Manual for Trademarks. [Washington, D.C.?]: The Program, 1990.

MLA (9th ed.) Citation

Patent Depository Library Program (U.S.). Design Code Manual for Trademarks. The Program, 1990.