APA citiranje

Boulding, K. E. (1988). The meaning of the 20th century: The great transition. Lanham: University Press of America.

Trích dẫn kiểu Chicago

Boulding, Kenneth E. The Meaning of the 20th Century: The Great Transition. Lanham: University Press of America, 1988.

MLA citiranje

Boulding, Kenneth E. The Meaning of the 20th Century: The Great Transition. Lanham: University Press of America, 1988.