Azhar Aziz, Endang Haryani, nurmaida irawani siregar. Education Psychology and Learning Performance: Does Mental Skills and Mental Techniques influences Learning Performance? A Survey Study on Indonesian Educational Institutions. J Sports Psychol [Internet]. 2022 Mar. 16 [cited 2024 Nov. 27];31(1):26-39. Available from: https://rpd-online.com/index.php/rpd/article/view/632