Citazione Stile APA (7a Edizione)

(1970). The open form: Essays for our time (3rd ed.). Harcourt, Brace and World.

Citazione stile Chigago Style (17a edizione)

The Open Form: Essays for Our Time. 3rd ed. New York: Harcourt, Brace and World, 1970.

Citatione MLA (9a ed.)

The Open Form: Essays for Our Time. 3rd ed. Harcourt, Brace and World, 1970.