JOHNSON EUGENE M. (1994). SALES MANAGEMENT: CONCEPTS, PRACTICES, AND CASES (2ND.). MCGRAW-HILL.
Chicago Style (17. basım) AtıfJOHNSON EUGENE M. SALES MANAGEMENT: CONCEPTS, PRACTICES, AND CASES. 2ND. NEW YORK: MCGRAW-HILL, 1994.
MLA (9th ed.) AtıfJOHNSON EUGENE M. SALES MANAGEMENT: CONCEPTS, PRACTICES, AND CASES. 2ND. MCGRAW-HILL, 1994.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..