TY  - BOOK
AU  - Vivian ,john.
TI  - The media of mass communication
SN  - 0 -205 -41848 -1
AV  - P90 . V5. 2004 
PY  - 2004///
CY  - Massachusset.
PB  - Pearson education, inc.
KW  - 1. Mass media
ER  -