Margarita Villamizar MM, Acosta Muñoz JF, Cuadros Molano JG, Montoya JC. Motivational factors of professional footballers, as sportsmen and internal customers in Boyaca, Colombia. Int. j. psychol. res. [Internet]. 2009 Dec. 30 [cited 2024 Nov. 24];2(2):148-57. Available from: https://revistas.usb.edu.co/index.php/IJPR/article/view/870