Ray, M. (1986). Creativity in business. New York: Doubleday.
Trích dẫn kiểu ChicagoRay, Michael. Creativity in Business. New York: Doubleday, 1986.
MLA CitationRay, Michael. Creativity in Business. New York: Doubleday, 1986.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.