Fifty years of world revolution (1917-1967).

MLA

Mandel, Ernest. Fifty Years of World Revolution (1917-1967). New York: Merit Publishers, 1968.

APA

Mandel, E. (1968). Fifty years of world revolution (1917-1967). New York: Merit Publishers.

Chicago

Mandel, Ernest Fifty Years of World Revolution (1917-1967). New York: Merit Publishers, 1968.