APA引文

Sproul, R. C. (1997). Grace unknown: The heart of reformed theology. Baker.

Chicago Style (17th ed.) Citation

Sproul, R. C. Grace Unknown: The Heart of Reformed Theology. Grand Rapids: Baker, 1997.

MLA引文

Sproul, R. C. Grace Unknown: The Heart of Reformed Theology. Baker, 1997.

警告：這些引文格式不一定是100％准確.