APA Zitierstil

Ries, A. (1996). Focus: The future of your company depends on it. New York: HarperBusiness.

Chicago Zitierstil

Ries, Al. Focus: The Future of Your Company Depends On It. New York: HarperBusiness, 1996.

MLA Zitierstil

Ries, Al. Focus: The Future of Your Company Depends On It. New York: HarperBusiness, 1996.

Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.