Gaya APA

Heymann, J. (2010). Profit at the bottom of the ladder: creating value by investing in your workforce (1). United States of America: Harvard Business School. Press.

Gaya MLA

Heymann, Jody. "Profit at the bottom of the ladder: creating value by investing in your workforce". 1 United States of America: Harvard Business School. Press, 2010. Text.