Sproul, R. C. (1997). Grace unknown: The heart of reformed theology. Baker.
Tohutoru Kātū Chicago (17th ed.)Sproul, R. C. Grace Unknown: The Heart of Reformed Theology. Grand Rapids: Baker, 1997.
Tohutoro MLA (9th ed.)Sproul, R. C. Grace Unknown: The Heart of Reformed Theology. Baker, 1997.
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