Cita APA (7a ed.)

McKeon, R. P., McKeon, Z. K., & Ruttenberg, H. (1990). Freedom and history and other essays: An introduction to the thought of Richard McKeon. University of Chicago Press.

Cita Chicago Style (17a ed.)

McKeon, Richard Peter, Zahava K. McKeon, y Howard Ruttenberg. Freedom and History and Other Essays: An Introduction to the Thought of Richard McKeon. Chicago [etc.]: University of Chicago Press, 1990.

Cita MLA (9a ed.)

McKeon, Richard Peter, et al. Freedom and History and Other Essays: An Introduction to the Thought of Richard McKeon. University of Chicago Press, 1990.