Efficacy of a workbook to promote forgiveness: a randomized controlled trial with university students.
Harper Q, Worthington EL, Griffin BJ, Lavelock CR, Hook JN, Vrana SR, Greer CL. Efficacy of a workbook to promote forgiveness: a randomized controlled trial with university students. J Clin Psychol. 2014 Dec; 70(12):1158-69.