Παραπομπή APA
Shapiro, B. P. (1977). Sales program management: Formulation and implementation. New York: McGraw-Hill.
Παραπομπή Chicago StyleShapiro, Benson P. Sales Program Management: Formulation and Implementation. New York: McGraw-Hill, 1977.
Παραπομπή MLAShapiro, Benson P. Sales Program Management: Formulation and Implementation. New York: McGraw-Hill, 1977.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.