Ohai, Tim
Sales coaching
American Society for Training & Development, 2008
 eBooks
Humphries, john
How to Manage a Sales Team
Groiler International, 1993
 Buku Teks
Seidman, Dan
Sales training that drives revenue: ISD
American Society for Training & Development, 2008
 eBooks
Jones, John G.
Sales management
Alexander Hamilton Institute, 1961
 Buku Teks
Still, Richard R.
Sales management
Prentice Hall International, 1988
 Buku Teks