Παραπομπή APA

Gabriel, H. (1961). Techniques of creative thinking for management. Preentice hall.

Παραπομπή Chicago Style

Gabriel, H.W. Techniques of Creative Thinking for Management. New Jersey: Preentice hall, 1961.

Παραπομπή MLA

Gabriel, H.W. Techniques of Creative Thinking for Management. Preentice hall, 1961.