Cita APA

Ries A I & Trout, J. (1993). Twenty two immutable laws of marketing.

Chicago Edition Citation

Ries A I i Jack Trout. Twenty Two Immutable Laws of Marketing. :, 1993.

Cita MLA

Ries A I i Jack Trout. Twenty Two Immutable Laws of Marketing. 1993.

Atenció: Aquestes cites poden no estar 100% correctes.