Seldman, M. (1981). Super selling through self-talk: The ultimate edge in sales success. Unicversal book stall.
Chicago Style aipamenaSeldman, Marty. Super Selling Through Self-talk: The Ultimate Edge in Sales Success. New Delhi: Unicversal book stall, 1981.
MLA aipamenaSeldman, Marty. Super Selling Through Self-talk: The Ultimate Edge in Sales Success. Unicversal book stall, 1981.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.