APA (7e ed.) Bronvermelding

Não informado. (1971). Official Gazette of the United States Patent and Trademark Office. U.S. Department of Commerce.

Chicago (17e ed.) Bronvermelding

Não informado. Official Gazette of the United States Patent and Trademark Office. Washington: U.S. Department of Commerce, 1971.

MLA (8e ed.) Bronvermelding

Não informado. Official Gazette of the United States Patent and Trademark Office. U.S. Department of Commerce, 1971.

Let op: Deze citaties zijn niet altijd 100% accuraat.