Citazione Stile APA (7a Edizione)

Gruber, H. E., & Terrell, G. (1962). Contemporary approaches to creative thinking: A symposium held at the university of Colorado. Atherton.

Citazione stile Chigago Style (17a edizione)

Gruber, Howard E., e Glenn Terrell. Contemporary Approaches to Creative Thinking: A Symposium Held at the University of Colorado. London: Atherton, 1962.

Citatione MLA (9a ed.)

Gruber, Howard E., e Glenn Terrell. Contemporary Approaches to Creative Thinking: A Symposium Held at the University of Colorado. Atherton, 1962.