SHAPIRO, B. P. (1977). Sales Program Management Formulation And Implementation Benson P. Shapiro. McGraw-Hill.
Chicago-referens (17:e uppl.)SHAPIRO, Benson P. Sales Program Management Formulation And Implementation Benson P. Shapiro. McGraw-Hill, 1977.
MLA-referens (8:e uppl.)SHAPIRO, Benson P. Sales Program Management Formulation And Implementation Benson P. Shapiro. McGraw-Hill, 1977.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.