Cita APA (7a ed.)

United States. Patent and Trademark Office & Allen, D. B. (1987). Allen's trademark digest: ATD. [David B. Allen].

Cita Chicago Style (17a ed.)

United States. Patent and Trademark Office y David B. Allen. Allen's Trademark Digest: ATD. [Arlington, VA]: [David B. Allen], 1987.

Cita MLA (9a ed.)

United States. Patent and Trademark Office y David B. Allen. Allen's Trademark Digest: ATD. [David B. Allen], 1987.