Hanan, Mack
Consultative selling: the Hanan formula for high-margin sales at high levels
[American Management Association, ], 2004
 eBooks
Hanan, Mack
Consultative selling: the Hanan formula for high-margin sales at high levels
[American Management Association;;, ], 2011
 eBooks
Hanan, Mack
Consultative selling : the Hanan formula for high-margin sales at high levels
Amacom, 2011
 Buku Teks SO
Lewicki, Roy J.
Negotiation
Richard D. Irwin, 1985
 Buku Teks
Tracy, Brian
Negotiation
American Management Association, 2013
 eBooks