Gaya APA
Ries, Al. (1981).
Positioning : the battle for your mind .
America:
McGraw-Hill Inc..
Gaya Chicago
Ries, Al.
Positioning : the battle for your mind.
America:
McGraw-Hill Inc.,
1981.
Text.
Gaya MLA
Ries, Al.
Positioning : the battle for your mind.
America:
McGraw-Hill Inc.,
1981.
Text.
Gaya Turabian
Ries, Al.
Positioning : the battle for your mind.
America:
McGraw-Hill Inc.,
1981.
Print.