Dyfyniad APA

 Heymann, J. (2010).  Profit at the Bottom of the Ladder: Creating Value by Investing in your Workforce.  Harvard Business.

Dyfyniad Arddull Chicago

 Heymann, Jody.  Profit At the Bottom of the Ladder: Creating Value By Investing in Your Workforce.  Harvard Business, 2010.

Dyfyniad MLA

 Heymann, Jody.  Profit At the Bottom of the Ladder: Creating Value By Investing in Your Workforce.  Harvard Business, 2010.

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