Gaya APA

Berkhof, H., Sierd, W. (2001). Christian Faith: an introduction to the study of the faith (Trawas) . Grand Rapids, Michigan: William B. Eerdmans Publishing Company.

Gaya MLA

Berkhof, Hendrikus., Sierd, Woudstra. "Christian Faith: an introduction to the study of the faith (Trawas)". Grand Rapids, Michigan: William B. Eerdmans Publishing Company, 2001. Text.