APA (7th ed.) Citation

Warda, M. (2004). How to register your own copyright (5th ed.). Sphinx Pub..

Chicago Style (17th ed.) Citation

Warda, Mark. How to Register Your Own Copyright. 5th ed. Naperville, Ill.: Sphinx Pub., 2004.

MLA (9th ed.) Citation

Warda, Mark. How to Register Your Own Copyright. 5th ed. Sphinx Pub., 2004.