APA (7. basım) Alıntı

Sproul, R. C. (2003). Defending your Faith: An introduction to apologetics. Crossway.

Chicago Style (17. basım) Atıf

Sproul, R. C. Defending Your Faith: An Introduction to Apologetics. Wheaton, IL: Crossway, 2003.

MLA (9th ed.) Atıf

Sproul, R. C. Defending Your Faith: An Introduction to Apologetics. Crossway, 2003.