Cook, H. R. (1959). Missionary life and work: A discussion of principles and practices of missions. Moody.
Lua i Stíl Chicago (17ú heag.)Cook, Harold R. Missionary Life and Work: A Discussion of Principles and Practices of Missions. Chicago: Moody, 1959.
Lua MLA (9ú heag.)Cook, Harold R. Missionary Life and Work: A Discussion of Principles and Practices of Missions. Moody, 1959.
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