APA (7e ed.) Bronvermelding
Boulding, K. E. (1964). The meaning of the twentieth century: The great transition ([1st ed.].). Harper & Row Publishers.
Chicago (17e ed.) Bronvermelding
Boulding, Kenneth E. The Meaning of the Twentieth Century: The Great Transition. [1st ed.]. New York: Harper & Row Publishers, 1964.
MLA (9e ed.) Bronvermelding
Boulding, Kenneth E. The Meaning of the Twentieth Century: The Great Transition. [1st ed.]. Harper & Row Publishers, 1964.
Let op: Deze citaties zijn niet altijd 100% accuraat.