APA (7th ed.) Citation

Bettinghaus, E. P. (1966). Message preparation; the nature of proof. Bobbs-Merril.

Chicago Style (17th ed.) Citation

Bettinghaus, Erwin Paul. Message Preparation; the Nature of Proof. Indianapolis: Bobbs-Merril, 1966.

MLA (9th ed.) Citation

Bettinghaus, Erwin Paul. Message Preparation; the Nature of Proof. Bobbs-Merril, 1966.

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