Scales, W. C. (1990). Evangelism and church growth manual. North American Division, General Conference of Seventh-day Adventist Ministrys.
Παραπομπή σε μορφή Chicago (17η εκδ.)Scales, W. C. Evangelism and Church Growth Manual. North American Division, General Conference of Seventh-day Adventist Ministrys, 1990.
Παραπομπή σε μορφή MLA (9th εκδ.)Scales, W. C. Evangelism and Church Growth Manual. North American Division, General Conference of Seventh-day Adventist Ministrys, 1990.
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