Παραπομπή σε μορφή APA (7η εκδ.)

Waelder, R. (1967). Progress and revolution: A study of the issues of our age. International Universities Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Waelder, Robert. Progress and Revolution: A Study of the Issues of Our Age. New York: International Universities Press, 1967.

Παραπομπή σε μορφή MLA (9th εκδ.)

Waelder, Robert. Progress and Revolution: A Study of the Issues of Our Age. International Universities Press, 1967.