Gaya APA

JOHNSTON, M, W., MARSHALL, G, W. (2003). Churchill/ford/walker's sales force management (7th ed.). Boston: McGraw-Hill Irwin.

Gaya MLA

JOHNSTON, Mark, W.., MARSHALL, Greg, W.. "Churchill/ford/walker's sales force management". 7th ed. Boston: McGraw-Hill Irwin, 2003. Buku.