Mercer, Sarah, Peter MacIntyre, Tammy Gregersen, and Kyle Talbot. “Positive Language Education: Combining Positive Education and Language Education”. Theory and Practice of Second Language Acquisition 4, no. 2 (December 14, 2018). Accessed June 4, 2020. https://www.journals.us.edu.pl/index.php/TAPSLA/article/view/7011.