APA (7e ed.) Bronvermelding
Welles, S., & Butler, N. M. (1943). The World of the four freedoms: With a foreword by Nicholas Murray Butler. Columbia Univ. Pr.
Chicago (17e ed.) Bronvermelding
Welles, Sumner, en Nicholas Murray Butler. The World of the Four Freedoms: With a Foreword by Nicholas Murray Butler. New York: Columbia Univ. Pr, 1943.
MLA (9e ed.) Bronvermelding
Welles, Sumner, en Nicholas Murray Butler. The World of the Four Freedoms: With a Foreword by Nicholas Murray Butler. Columbia Univ. Pr, 1943.
Let op: Deze citaties zijn niet altijd 100% accuraat.