APA (7th ed.) Zitazioa

Richards, L. O. (1972). Youth ministry. Zondervan.

Chicago Style (17th ed.) Zitazioa

Richards, Lawrence O. Youth Ministry. Grand Rapids: Zondervan, 1972.

MLA (9th ed.) Zitazioa

Richards, Lawrence O. Youth Ministry. Zondervan, 1972.