APA (7th ed.) Citation

Hammack, R. (2018). Book of proof (Third edition, edition 3.4.). Richard Hammack.

Chicago Style (17th ed.) Citation

Hammack, Richard. Book of Proof. Third edition, edition 3.4. Richmond, Virginia: Richard Hammack, 2018.

MLA (9th ed.) Citation

Hammack, Richard. Book of Proof. Third edition, edition 3.4. Richard Hammack, 2018.