Citazione Stile APA (7a Edizione)
Kean, D., & Cowpe, C. (2008). How to win friends and influence profits: The art of winning more business from your clients. Cyan.
Citazione stile Chigago Style (17a edizione)
Kean, David, e Chris Cowpe. How to Win Friends and Influence Profits: The Art of Winning More Business from Your Clients. London: Cyan, 2008.
Citatione MLA (9a ed.)
Kean, David, e Chris Cowpe. How to Win Friends and Influence Profits: The Art of Winning More Business from Your Clients. Cyan, 2008.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.