Cita APA (7th ed.)
McCullough, M. E., Sandage, S. J., & Worthington, E. L. (1997). To forgive is human: How to put your past in the past. InterVarsity Press.
Cita Chicago (17th ed.)
McCullough, Michael E., Steven J. Sandage, i Everett L. Worthington. To Forgive Is Human: How to Put Your Past in the Past. Illinois: InterVarsity Press, 1997.
Cita MLA (9th ed.)
McCullough, Michael E., et al. To Forgive Is Human: How to Put Your Past in the Past. InterVarsity Press, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.