APA (7e ed.) Bronvermelding
Walther, G. R. (2005). Heat up your cold calls: How to make prospects listen, respond, and buy. Dearborn Trade Pub..
Chicago (17e ed.) Bronvermelding
Walther, George R. Heat Up Your Cold Calls: How to Make Prospects Listen, Respond, and Buy. Chicago: Dearborn Trade Pub., 2005.
MLA (9e ed.) Bronvermelding
Walther, George R. Heat Up Your Cold Calls: How to Make Prospects Listen, Respond, and Buy. Dearborn Trade Pub., 2005.
Let op: Deze citaties zijn niet altijd 100% accuraat.