Gaya APA

Greenberg, H., Sweeney, P. (2013). How to Hire and Develop Your Next Top Performer : The Qualities That Make Salespeople Great . United States: McGraw-Hill.

Gaya MLA

Greenberg, Herb., Sweeney, Patrick. "How to Hire and Develop Your Next Top Performer : The Qualities That Make Salespeople Great". United States: McGraw-Hill, 2013. Text.