APA

(1996). Products and services catalog. Washington D.C: Information Dissemination Organizations, U.S. Dept. of Commerce, Patent and Trademark Office.

Chicago

1996. Products and services catalog. Washington D.C: Information Dissemination Organizations, U.S. Dept. of Commerce, Patent and Trademark Office.

Harvard

(1996). Products and services catalog. Washington D.C: Information Dissemination Organizations, U.S. Dept. of Commerce, Patent and Trademark Office.

MLA

Products and services catalog. Washington D.C: Information Dissemination Organizations, U.S. Dept. of Commerce, Patent and Trademark Office. 1996.