Cita APA

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

Citación estilo Chicago

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

Cita MLA

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

Precaución: Estas citas no son 100% exactas.