APA (7th ed.) Zitazioa
Boulding, K. E. (1965). The meaning of the twentieth century: The great transition (Primera edición.). Harper & Row, Publishers.
Chicago Style (17th ed.) Zitazioa
Boulding, Kenneth E. The Meaning of the Twentieth Century: The Great Transition. Primera edición. Nueva York: Harper & Row, Publishers, 1965.
MLA (9th ed.) Zitazioa
Boulding, Kenneth E. The Meaning of the Twentieth Century: The Great Transition. Primera edición. Harper & Row, Publishers, 1965.
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