TY  - BOOK
AU  - Davidson-Shivers, Gayle V.
TI  - Web based learning: design implementation, and evaluation 
SN  - 0130814253
AV  - LB1044.87 .D83 2006
PY  - 2006///
CY  - New Jersey
PB  - Pearson Merrill prentice
ER  -