Cita APA (7th ed.)

Grayling, A. C. (1998). Philosophy 1: A guide through the subject. Oxford University Press.

Cita Chicago (17th ed.)

Grayling, A. C. Philosophy 1: A Guide Through the Subject. Oxford ; New York: Oxford University Press, 1998.

Cita MLA (8th ed.)

Grayling, A. C. Philosophy 1: A Guide Through the Subject. Oxford University Press, 1998.