Παραπομπή APA

Ries, A., & Trout, J. (1993). The 22 immutable laws of marketing: Violate them at your own risk. New York: HarperBusiness.

Παραπομπή Chicago Style

Ries, Al., and Jack Trout. The 22 Immutable Laws of Marketing: Violate Them At Your Own Risk. New York: HarperBusiness, 1993.

Παραπομπή MLA

Ries, Al., and Jack Trout. The 22 Immutable Laws of Marketing: Violate Them At Your Own Risk. New York: HarperBusiness, 1993.

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