Hegarty, E. J. (1966). Seven secrets of sales success. Mc Graw Hill.
Chicago Edition CitationHegarty, Edward J. Seven Secrets of Sales Success. New York: Mc Graw Hill, 1966.
Cita MLAHegarty, Edward J. Seven Secrets of Sales Success. Mc Graw Hill, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.