Weeks, H. B. (1969). Adventist evangelism in the twentieth century. Review & Herald Publishing Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWeeks, Howard B. Adventist Evangelism in the Twentieth Century. Washington, D.C: Review & Herald Publishing Association, 1969.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWeeks, Howard B. Adventist Evangelism in the Twentieth Century. Review & Herald Publishing Association, 1969.
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