Masood Mafooz, a Muhammad Tahir Nazeer, Q. N. M. B. H. B. M. ud D. M. Z. ul H. (1). Measuring Physical Fitness among Secondary School Students of ages between 10 to 15 Years. Opción, 36, 3451-3470. Recuperado a partir de https://www.produccioncientificaluz.org/index.php/opcion/article/view/32971