Citazione Stile APA (7a Edizione)

Walther, G. R. (2005). Heat up your cold calls: How to make prospects listen, respond, and buy. Dearborn Trade Pub..

Citazione stile Chigago Style (17a edizione)

Walther, George R. Heat Up Your Cold Calls: How to Make Prospects Listen, Respond, and Buy. Chicago: Dearborn Trade Pub., 2005.

Citatione MLA (9a ed.)

Walther, George R. Heat Up Your Cold Calls: How to Make Prospects Listen, Respond, and Buy. Dearborn Trade Pub., 2005.