McGuire, Adam P, Thane M Erickson, Christina M Quach, and Brittany Willey. “Gratitude for Better or Worse: Differential Predictors and Affective Outcomes of State Gratitude in Positive and Negative Contexts”. Journal of Positive School Psychology 3, no. 2 (October 15, 2018): 99-111. Accessed September 25, 2020. https://journalppw.com/index.php/JPPW/article/view/91.