Citazione Stile APA (7a Edizione)

Boulding, K. E. (1965). The meaning of the twentieth century: The great transition. Harper & Row Publishers.

Citazione stile Chigago Style (17a edizione)

Boulding, Kenneth Ewart. The Meaning of the Twentieth Century: The Great Transition. New York: Harper & Row Publishers, 1965.

Citatione MLA (9a ed.)

Boulding, Kenneth Ewart. The Meaning of the Twentieth Century: The Great Transition. Harper & Row Publishers, 1965.