Cita APA

Estados Unidos Department of Commerce b.2 Patent and Trademark Office. (1976). General information concerning patents. Washington.

Citación estilo Chicago

Estados Unidos Department of Commerce b.2 Patent and Trademark Office. General Information Concerning Patents. Washington, 1976.

Cita MLA

Estados Unidos Department of Commerce b.2 Patent and Trademark Office. General Information Concerning Patents. Washington, 1976.