Lua APA (7ú heag.)
Boulding, K. E. (1964). The meaning of the twentieth century: The great transition ([1st ed.].). Harper & Row Publishers.
Lua i Stíl Chicago (17ú heag.)
Boulding, Kenneth E. The Meaning of the Twentieth Century: The Great Transition. [1st ed.]. New York: Harper & Row Publishers, 1964.
Lua MLA (9ú heag.)
Boulding, Kenneth E. The Meaning of the Twentieth Century: The Great Transition. [1st ed.]. Harper & Row Publishers, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.