Darymple, D. (1982). Sales management: Concepts and cases. John Wiley.
Chicago Style aipamenaDarymple, Douglas.J. Sales Management: Concepts and Cases. New York: John Wiley, 1982.
MLA aipamenaDarymple, Douglas.J. Sales Management: Concepts and Cases. John Wiley, 1982.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.