TY  - BOOK
AU  - Ries,Al
AU  - Trout,Jack
AU  - Sabin,William
AU  - Hamerling,Marlene
TI  - Positioning: The battle for your mind 
SN  - 0-07-065263-5
PY  - 1972///
CY  - New York, San Francisco, St.Louis
PB  - McGraw-Hill Book Co.
KW  - Advertising
ER  -