“Relationship Between Religious Attitude, Optimism, Spiritual Intelligence and Mental Hygiene of Post-Graduate Students of Islamic Azad University Tehran Science and Research Branch”. Mediterranean Journal of Social Sciences 6, no. 6 S1 (November 3, 2015): 208. Accessed November 22, 2024. https://www.richtmann.org/journal/index.php/mjss/article/view/8009.