Evenson, Ren`ee
Customer service training IOI: quick and easy techniques that get great results
Amacom, 2005
 Buku Teks
Evenson, Renee, 1951-
Customer service training 101: quick and easy techniques that get great results
American Management Association, 2011
 eBooks
Evenson, Renee, 1951-
Stock image customer service management training 101 : quick and easy techniques that get great results
Amacom, 2012
 Buku Teks
Evenson, Renee, 1951-
Customer service management training 101: quick and easy techniques that get great results
American Management Association, 2012
 eBooks
Gallagher, Richard S.
Great customer connections: simple psychological techniques that guarantee exceptional service
American Management Association, 2006
 eBooks