Pascha, M. (2018). The PERMA Model: Your scientific theory of happiness. Positive Psychology Program: Your One-Stop PP Resource! https://edtechbooks.org/-nLV
Kern, P. (n.d.). Questionnaires. Peggy's Website, www.peggykern.org/questionnaires.html.
Watanabe, K., Kawakami, N., Shiotani, T., Adachi, H., Matsumoto, K., Imamura, K., Matsumoto, K., Yamagami, F., Fusejimia, A., Muraoka, T., Kagami, T., Shimazu, A. & Kern, M. L. (2018). The Japanese Workplace PERMA-Profiler: A validation study among Japanese workers. Journal of occupational health, 60(5), 383–393. doi:10.1539/joh.2018-0050-OA