APA (7th ed.) Citation

Hammack, R. (2013). Book of Proof (Third Edition.). Richard Hammack.

Chicago Style (17th ed.) Citation

Hammack, Richard. Book of Proof. Third Edition. Richmond, VA: Richard Hammack, 2013.

MLA (9th ed.) Citation

Hammack, Richard. Book of Proof. Third Edition. Richard Hammack, 2013.

Warning: These citations may not always be 100% accurate.