Marx, K., & Fernbach, D. (1973). Surveys from exile. Penguin Books.
Cita Chicago (17th ed.)Marx, Karl, i David Fernbach. Surveys from Exile. New York: Penguin Books, 1973.
Cita MLA (9th ed.)Marx, Karl, i David Fernbach. Surveys from Exile. Penguin Books, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.