Leterman, E. G. (1974). Sales and sales management (1a. ed.). Alexander Hamilton Institute.
Chicago Style (17th ed.) CitationLeterman, Elmer G. Sales and Sales Management. 1a. ed. Nueva York: Alexander Hamilton Institute, 1974.
MLA (9th ed.) CitationLeterman, Elmer G. Sales and Sales Management. 1a. ed. Alexander Hamilton Institute, 1974.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.