TY  - BOOK
AU  - Blattberg Robert G
AU  -  Neslin Scott A
TI  - Sales promotion: Concepts, methods and strategies   
U1  - X:514-8, N0 
PY  - 1990///
CY  - New Jersey 
PB  - Prentice-Hall         
KW  - Salesmanship
N1  - Bibliography: p 482-501
ER  -