Gaya APA

Olson, G, W. (-1969). Church growth in Sierra Leone: a study of Church growth in Africa's oldest Protestant Mission field. . Grand Rapids: Eerdmans Publishing Co.

Gaya MLA

Olson, Gilbert, W.. "Church growth in Sierra Leone: a study of Church growth in Africa's oldest Protestant Mission field. ". Grand Rapids: Eerdmans Publishing Co, -1969. Buku.