Berkhof, L. (1938). A summary of Christian doctrine. Banner of Truth Trust.
Tohutoru Kātū Chicago (17th ed.)Berkhof, Louis. A Summary of Christian Doctrine. Edinburgh: Banner of Truth Trust, 1938.
Tohutoro MLA (9th ed.)Berkhof, Louis. A Summary of Christian Doctrine. Banner of Truth Trust, 1938.
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