APA (7th ed.) Zitazioa
Richards, L. O. (1988). Children's ministry. Zondervan.
Chicago Style (17th ed.) Zitazioa
Richards, Lawrence O. Children's Ministry. Grand Rapids: Zondervan, 1988.
MLA (9th ed.) Zitazioa
Richards, Lawrence O. Children's Ministry. Zondervan, 1988.
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