McCullough, M. E., Sandage, S. J., & Worthington, E. L. (1997). To forgive is human: How to put your past in the past. InterVarsity Press.
芝加哥风格引文McCullough, Michael E., Steven J. Sandage, 与 Everett L. Worthington. To Forgive Is Human: How to Put Your Past in the Past. Illinois: InterVarsity Press, 1997.
MLA引文McCullough, Michael E., et al. To Forgive Is Human: How to Put Your Past in the Past. InterVarsity Press, 1997.
警告：这些引文格式不一定是100％准确.