APA引文

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

Trích dẫn kiểu Chicago

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

MLA引文

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

警告：這些引文格式不一定是100％准確.