Ludwig, G. E. (1979). Building an effective youth ministry. Abingdon.
芝加哥风格引文Ludwig, Glenn E. Building an Effective Youth Ministry. Nashville: Abingdon, 1979.
MLA引文Ludwig, Glenn E. Building an Effective Youth Ministry. Abingdon, 1979.
警告：这些引文格式不一定是100％准确.