Dyfyniad APA

 Buffett, W. (2007).  Warren Buffett speaks: Wit and wisdom from the world’s greatest investor.  John Wiley & Sons.

Dyfyniad Arddull Chicago

 Buffett, Warren.  Warren Buffett Speaks: Wit and Wisdom From the World’s Greatest Investor.  John Wiley & Sons, 2007.

Dyfyniad MLA

 Buffett, Warren.  Warren Buffett Speaks: Wit and Wisdom From the World’s Greatest Investor.  John Wiley & Sons, 2007.

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