Geisler, N. L. (1999). Baker encyclopedia of christian apologetics. Baker Books.
Lua i Stíl Chicago (17ú heag.)Geisler, Norman L. Baker Encyclopedia of Christian Apologetics. Grand Rapids, MI: Baker Books, 1999.
Lua MLA (9ú heag.)Geisler, Norman L. Baker Encyclopedia of Christian Apologetics. Baker Books, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.