Cita APA (7th ed.)

Inwagen, P. V., & Zimmerman, D. W. (2008). Metaphysics: The big questions (2nd ed.). Blackwell.

Cita Chicago (17th ed.)

Inwagen, Peter Van, i Dean W. Zimmerman. Metaphysics: The Big Questions. 2nd ed. UK: Blackwell, 2008.

Cita MLA (9th ed.)

Inwagen, Peter Van, i Dean W. Zimmerman. Metaphysics: The Big Questions. 2nd ed. Blackwell, 2008.