Dyfyniad APA

 Vitale, J. (2007).  The seven lost secrets of success: Million dollar ideas of Bruce Barton, America’s forgotten genius.  John Wiley & Sons.

Dyfyniad Arddull Chicago

 Vitale, Joe.  The Seven Lost Secrets of Success: Million Dollar Ideas of Bruce Barton, America’s Forgotten Genius.  John Wiley & Sons, 2007.

Dyfyniad MLA

 Vitale, Joe.  The Seven Lost Secrets of Success: Million Dollar Ideas of Bruce Barton, America’s Forgotten Genius.  John Wiley & Sons, 2007.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.