Yancey, P. (1997). What's so amazing about grace? Zondervan.
Cita Chicago (17th ed.)Yancey, Philip. What's so Amazing About Grace? Grand Rapids, Mich: Zondervan, 1997.
Cita MLA (9th ed.)Yancey, Philip. What's so Amazing About Grace? Zondervan, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.