APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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