Haddad Narafshan, M., and S. Noori. “Enhancing Self-Esteem in Classroom Language Learning: The Potential of Implementing a Strength-Based Positive Psychology Intervention at Higher Education”. International Journal of Language Teaching and Education, vol. 2, no. 3, Dec. 2018, pp. 334-45, doi:10.22437/ijolte.v2i3.5593.