Patents and trademarks style manual :
a supplement to the United States Government Printing Office style manual
APA Citation
United States. Patent and Trademark Office. (1984). Patents and trademarks style manual: a supplement to the United States Government Printing Office style manual. [Washington, D.C.?]: U.S. Patent and Trademark Office .
MLA Citation
United States. Patent and Trademark Office. Patents And Trademarks Style Manual: a Supplement to the United States Government Printing Office Style Manual. [Washington, D.C.?]: U.S. Patent and Trademark Office , 1984.
Warning: These citations may not always be complete (especially for serials).