Schaeffer, F. A. (1972). He is there and He is not silent. Tyndale.
Chicago Style (17th ed.) ZitazioaSchaeffer, Francis A. He Is There and He Is Not Silent. Wheaton: Tyndale, 1972.
MLA (9th ed.) ZitazioaSchaeffer, Francis A. He Is There and He Is Not Silent. Tyndale, 1972.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.