Mandel, E., Cannon, J. P., & Charlier, F. (1968). 50 years of world revolution 1917-1967: An international symposium. New York: Merit Publishers.
Lua i Stíl Chicago (17ú heag.)Mandel, Ernest, James P. Cannon, agus Fernand Charlier. 50 Years of World Revolution 1917-1967: An International Symposium. New York: Merit Publishers, 1968.
Lua MLA (8ú heag.)Mandel, Ernest, et al. 50 Years of World Revolution 1917-1967: An International Symposium. New York: Merit Publishers, 1968.
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