Waelder, R. (1967). Progress and revolution: A study of the issues of our age. International Universities Press.
芝加哥风格引文Waelder, Robert. Progress and Revolution: A Study of the Issues of Our Age. New York: International Universities Press, 1967.
MLA引文Waelder, Robert. Progress and Revolution: A Study of the Issues of Our Age. International Universities Press, 1967.
警告：这些引文格式不一定是100％准确.