Corey, S. J. (1912). Among central African tribes: Journal of a visit to the Congo mission (6th ed.). Foreign Christian Missionary Society.
Chicago-viite (17. p.)Corey, Stephen J. Among Central African Tribes: Journal of a Visit to the Congo Mission. 6th ed. Cincinnati: Foreign Christian Missionary Society, 1912.
MLA-viite (8. p.)Corey, Stephen J. Among Central African Tribes: Journal of a Visit to the Congo Mission. 6th ed. Foreign Christian Missionary Society, 1912.
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