APA (7th ed.) Zitazioa
McDowell, J., & Stewart Don. (1980). Answers to tough questions: Skeptics ask about the Christian faith. Here's Life Publishers.
Chicago Style (17th ed.) Zitazioa
McDowell, Josh, eta Stewart Don. Answers to Tough Questions: Skeptics Ask About the Christian Faith. California: Here's Life Publishers, 1980.
MLA (9th ed.) Zitazioa
McDowell, Josh, eta Stewart Don. Answers to Tough Questions: Skeptics Ask About the Christian Faith. Here's Life Publishers, 1980.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.