APA (7e ed.) Bronvermelding
Kean, D., & Cowpe, C. (2008). How to win friends and influence profits: The art of winning more business from your clients. Cyan.
Chicago (17e ed.) Bronvermelding
Kean, David, en Chris Cowpe. How to Win Friends and Influence Profits: The Art of Winning More Business from Your Clients. London: Cyan, 2008.
MLA (9e ed.) Bronvermelding
Kean, David, en Chris Cowpe. How to Win Friends and Influence Profits: The Art of Winning More Business from Your Clients. Cyan, 2008.
Let op: Deze citaties zijn niet altijd 100% accuraat.