Edwards D, Steyn B. Establishment of norms for the Bull‟s Mental Skills Questionnaire in South African university students: An exploratory study. Af. J. Phys Activity and Health Sci. [Internet]. 2011 Oct. 27 [cited 2026 Sep. 20];17(3):526-34. Available from: https://www.ajol.info/index.php/ajpherd/article/view/71105