Nazim Shaker Z. Positive thinking and its relationship to psychological happiness among students of the Department of Physical Education and Sports Sciences - College of Education for Girls. BERJ [Internet]. 2023 Aug. 1 [cited 2025 Oct. 26];19(21):311-28. Available from: https://moss.uomosul.edu.iq/index.php/berj/article/view/38726