APA ציטוט

Ries, A. T. (1993). Twenty two immutable laws of marketing: Violate them at your own risk.

Chicago Edition Citation

Ries, Al; Trout. Twenty Two Immutable Laws of Marketing: Violate Them at Your Own Risk. HarperCollins Publishers: India, 1993.

ציטוט MLA

Ries, Al; Trout. Twenty Two Immutable Laws of Marketing: Violate Them at Your Own Risk. 1993.