Ries, A. (1996). Focus: The feature of your company depends on it. Harper Collins Publishers.
Chicago Edition CitationRies, AI. Focus: The Feature of Your Company Depends on It. New York: Harper Collins Publishers, 1996.
MLA Edition CitationRies, AI. Focus: The Feature of Your Company Depends on It. Harper Collins Publishers, 1996.
Warning: These citations may not always be 100% accurate.