APA (7th ed.) Zitazioa

Wider-Smith, A. E., & Wilder-Smith, A. .. (1981). He who thinks has to believe. Bethany.

Chicago Style (17th ed.) Zitazioa

Wider-Smith, A. E., eta A .E Wilder-Smith. He Who Thinks Has to Believe. Minneapolis: Bethany, 1981.

MLA (9th ed.) Zitazioa

Wider-Smith, A. E., eta A .E Wilder-Smith. He Who Thinks Has to Believe. Bethany, 1981.