APA (7e ed.) Bronvermelding

Johnston, M. W., & Marshall, G. W. (2006). Sales force management: Churchill/Ford/Walker´s (8th ed.). McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Johnston, Mark W., en Greg W. Marshall. Sales Force Management: Churchill/Ford/Walker´s. 8th ed. Boston, MA: McGraw-Hill, 2006.

MLA (9e ed.) Bronvermelding

Johnston, Mark W., en Greg W. Marshall. Sales Force Management: Churchill/Ford/Walker´s. 8th ed. McGraw-Hill, 2006.