Lopez Becerra, Nubia Ibeth. “Relation Between Motivational Factors and Levels of Anxiety En Cheerleaders Precompetition”. International Journal of Psychological Research 4, no. 1 (June 30, 2011): 80–91. Accessed April 18, 2024. https://revistas.usb.edu.co/index.php/IJPR/article/view/802.