Denny, R. (2001). Selling to win: Tested techniques for closing the sale (Rev. 2nd edition.). Kogan Page.
Citazione stile Chigago Style (17a edizione)Denny, Richard. Selling to Win: Tested Techniques for Closing the Sale. Rev. 2nd edition. London: Kogan Page, 2001.
Citatione MLA (8a ed.)Denny, Richard. Selling to Win: Tested Techniques for Closing the Sale. Rev. 2nd edition. Kogan Page, 2001.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.