APA (7e ed.) Bronvermelding

King, G. Secrets of Selling: How to win in any sales situation (2.). Pearson Education UK.

Chicago (17e ed.) Bronvermelding

King, Geoff. Secrets of Selling: How to Win in Any Sales Situation. 2. Pearson Education UK.

MLA (8e ed.) Bronvermelding

King, Geoff. Secrets of Selling: How to Win in Any Sales Situation. 2. Pearson Education UK.

Let op: Deze citaties zijn niet altijd 100% accuraat.