SCHAAF. (1995). Keeping the edge: Giving customes the service they demand. Penguin.
Chicago Style (17th ed.) CitationSCHAAF. Keeping the Edge: Giving Customes the Service They Demand. New York: Penguin, 1995.
MLA (9th ed.) CitationSCHAAF. Keeping the Edge: Giving Customes the Service They Demand. Penguin, 1995.
Warning: These citations may not always be 100% accurate.