Gaya APA

Heyman, J., Barrera, M. (2010). Profit At The Bottom Of The Ladder : Creating Value by Investing in Your Workforce (1). USA: Harvard Business Press.

Gaya MLA

Heyman, Jody., Barrera, Magda. "Profit At The Bottom Of The Ladder : Creating Value by Investing in Your Workforce". 1 USA: Harvard Business Press, 2010. Hardcopy (Textbook).