Cita APA (7th ed.)

Boulding, K. E. (1965). The meaning of the Twentieth Century: The great transition. Harper and Row.

Cita Chicago (17th ed.)

Boulding, Kenneth E. The Meaning of the Twentieth Century: The Great Transition. New York, USA: Harper and Row, 1965.

Cita MLA (9th ed.)

Boulding, Kenneth E. The Meaning of the Twentieth Century: The Great Transition. Harper and Row, 1965.