APA (7e ed.) Bronvermelding

JOHNSON EUGENE M. (1994). SALES MANAGEMENT: CONCEPTS, PRACTICES, AND CASES (2ND.). MCGRAW-HILL.

Chicago (17e ed.) Bronvermelding

JOHNSON EUGENE M. SALES MANAGEMENT: CONCEPTS, PRACTICES, AND CASES. 2ND. NEW YORK: MCGRAW-HILL, 1994.

MLA (9e ed.) Bronvermelding

JOHNSON EUGENE M. SALES MANAGEMENT: CONCEPTS, PRACTICES, AND CASES. 2ND. MCGRAW-HILL, 1994.