APA-ийн эшлэл(7 дахь хэвлэлт)

Kean, D., & Cowpe, C. (2008). How to win friends and influence profits: The art of winning more business from your clients. Cyan.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Kean, David, ба Chris Cowpe. How to Win Friends and Influence Profits: The Art of Winning More Business from Your Clients. London: Cyan, 2008.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Kean, David, ба Chris Cowpe. How to Win Friends and Influence Profits: The Art of Winning More Business from Your Clients. Cyan, 2008.