MLA

Kenny, Anthony. Frege: An Introduction to the Founder of Modern Analytic Philosophy. New York: Penguin Books, 1995.

APA

Kenny, A. (1995). Frege: An introduction to the founder of modern analytic philosophy. New York: Penguin Books.

Chicago

Kenny, Anthony Frege: An Introduction to the Founder of Modern Analytic Philosophy. New York: Penguin Books, 1995.