APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.