Cita APA (7th ed.)
Kenneth, J. (1977). The age of uncertainty (ed.). Houghton Mifflin Co..
Cita Chicago (17th ed.)
Kenneth, John. The Age of Uncertainty. ed. Boston: Houghton Mifflin Co., 1977.
Cita MLA (9th ed.)
Kenneth, John. The Age of Uncertainty. ed. Houghton Mifflin Co., 1977.
Atenció: Aquestes cites poden no estar 100% correctes.