Engel, J. F., & Norton, W. H. (1975). What's gone wrong with the harvest?: A communication stategy for the church world evangelization. Zondervan Publishing House.
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Chicago Style (17th ed.) Zitazioa
Engel, James F., eta Wilbert H. Norton. What's Gone Wrong with the Harvest?: A Communication Stategy for the Church World Evangelization. Michigan: Zondervan Publishing House, 1975.
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MLA (9th ed.) Zitazioa
Engel, James F., eta Wilbert H. Norton. What's Gone Wrong with the Harvest?: A Communication Stategy for the Church World Evangelization. Zondervan Publishing House, 1975.
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