Folkenberg, R. (2002). Health for the harvest. North American Division Evangelism Institute.
Chicago Style (17. basım) AtıfFolkenberg, Robert. Health for the Harvest. Berrien Springs, MI: North American Division Evangelism Institute, 2002.
MLA (9th ed.) AtıfFolkenberg, Robert. Health for the Harvest. North American Division Evangelism Institute, 2002.
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