Browning, Samuel, and E. Scott Geller. “Studying Subjective Well-Being During a Quarantine: How Does a Weekly Gratitude Letter Affect Daily Mood States?”. Virginia Journal of Business, Technology, and Science 1, no. 1 (July 7, 2021). Accessed April 25, 2024. https://vajbts.org/index.php/vaJBTS/article/view/7.