APA-referens

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

Chicago-stil citat

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

MLA-referens

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

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.