Gaya APA

RIES, Al, Jack Trout. (1993). The 22 immutable laws of marketing : violate them at your own risk! . New York: HarperBusiness.

Gaya Chicago

RIES, Al, Jack Trout. The 22 immutable laws of marketing : violate them at your own risk!. New York: HarperBusiness, 1993. Text.

Gaya MLA

RIES, Al, Jack Trout. The 22 immutable laws of marketing : violate them at your own risk!. New York: HarperBusiness, 1993. Text.

Gaya Turabian

RIES, Al, Jack Trout. The 22 immutable laws of marketing : violate them at your own risk!. New York: HarperBusiness, 1993. Print.