APA-viite (7. p.)
Gibson, T. (1992). Stepping out: A guide to short-term missions. Short-term Missions Advocates, Inc.
Chicago-viite (17. p.)
Gibson, Tim. Stepping Out: A Guide to Short-term Missions. Monrovia: Short-term Missions Advocates, Inc, 1992.
MLA-viite (9. p.)
Gibson, Tim. Stepping Out: A Guide to Short-term Missions. Short-term Missions Advocates, Inc, 1992.
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