APA Citatie

Ries, A. (1993). The 22 immutable laws of marketing. New York: Harper Business.

Chicago Style citaat

Ries, Al. The 22 Immutable Laws of Marketing. New York: Harper Business, 1993.

MLA citatie

Ries, Al. The 22 Immutable Laws of Marketing. New York: Harper Business, 1993.

Let op: Deze citaties zijn niet altijd 100% accuraat.