Mackenizie, John
Its show time! how to plan and hold successful sales meetings / John Mackenizie
Illinois: Dow Jones-Irwin, 1989
 Buku Teks
Becker, Esther R.
The successful secretary's handbook
Harper &​ Row, 1971
 Buku Referensi
Lambert, Brian
10 steps to successful sales
American Society for Training & Development, 2010
 eBooks
Richardson, Linda
The Sales success handbook: 20 lessons to open and close sales now
McGraw-Hill, 2003
 Buku Teks
Donnolo, Mark
What your CEO needs to know about sales compensation: connecting the corner office to the front line
[American Management Association, ], 2013
 eBooks