Gaya APA

Johnston, M, W., Marshall, G, W. (2003). Churchill/Ford/Walker's sales force management. 7th ed. (7). Boston, Massachusetts: McGraw-Hill.

Gaya MLA

Johnston, Mark, W.., Marshall, Greg, W.. "Churchill/Ford/Walker's sales force management. 7th ed.". 7 Boston, Massachusetts: McGraw-Hill, 2003. Text.