Ray, M. (1986). Creativity in business. New York: Doubleday.
Trích dẫn kiểu ChicagoRay, Michael. Creativity in Business. New York: Doubleday, 1986.
ציטוט MLARay, Michael. Creativity in Business. New York: Doubleday, 1986.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.