APA (7th ed.) Zitazioa

Schaeffer, F. A. (1971). True spirituality. Tyndale.

Chicago Style (17th ed.) Zitazioa

Schaeffer, Francis A. True Spirituality. Wheaton: Tyndale, 1971.

MLA (9th ed.) Zitazioa

Schaeffer, Francis A. True Spirituality. Tyndale, 1971.