APA (7th ed.) Citation

Warda, M. (1994). How to register your own trademark: With forms. Sphinx Pub..

Chicago Style (17th ed.) Citation

Warda, Mark. How to Register Your Own Trademark: With Forms. Clearwater, FL: Sphinx Pub., 1994.

MLA (9th ed.) Citation

Warda, Mark. How to Register Your Own Trademark: With Forms. Sphinx Pub., 1994.