APA
Seltz D., . (1976). Industrial selling. New York: Tata MacGraw-Hill.
Chicago
Seltz David, . 1976. Industrial selling. New York: Tata MacGraw-Hill.
Harvard
Seltz D., . (1976). Industrial selling. New York: Tata MacGraw-Hill.
MLA
Seltz David, . Industrial selling. New York: Tata MacGraw-Hill. 1976.
