What is philosophy? One philosopher's answer

MLA

Körner, Stephan. What Is Philosophy? One Philosopher's Answer. London: Penguin, 1969.

APA

Körner, S. (1969). What is philosophy? One philosopher's answer. London: Penguin.

Chicago

Körner, Stephan What Is Philosophy? One Philosopher's Answer. London: Penguin, 1969.