APA aipamena

Ray, M. (1989). Creativity in business. New York: Doubleday.

Chicago Style aipamena

Ray, Michael. Creativity in Business. New York: Doubleday, 1989.

MLA aipamena

Ray, Michael. Creativity in Business. New York: Doubleday, 1989.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.