Wilner, J. D. (1998). Seven secrets to successful sales management: The sales manager's manual. St. Lucie press.
Dyfyniad Arddull ChicagoWilner, Jack D. Seven Secrets to Successful Sales Management: The Sales Manager's Manual. Washington: St. Lucie press, 1998.
Dyfyniad MLAWilner, Jack D. Seven Secrets to Successful Sales Management: The Sales Manager's Manual. St. Lucie press, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.