APA-ийн эшлэл(7 дахь хэвлэлт)

Boulding, K. E. (1964). The meaning of the twentieth century: The great transition ([1st ed.].). Harper & Row Publishers.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Boulding, Kenneth E. The Meaning of the Twentieth Century: The Great Transition. [1st ed.]. New York: Harper & Row Publishers, 1964.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Boulding, Kenneth E. The Meaning of the Twentieth Century: The Great Transition. [1st ed.]. Harper & Row Publishers, 1964.