Rodgers, Mark
Accelerate the sale : kick-start your personal selling style to close more sales, faster
McGraw-Hill , 2011
 Buku Teks
Dalziel, Henry
How to attack and defend your website
Syngress, 2015
 eBooks
Taylor, Jim
Selling to the new elite : discover the secret to winning over your wealthist prospects
Amacom, 2011
 Buku Teks
Taylor, Jim
Selling to the new elite: discover the secret to winning over your wealthiest prospects
American Management Association;, 2011
 eBooks
Baron, Eric
Innovative team selling : how to leverage your resources and make team selling work
Wiley, 2013
 Buku Teks