P. Z. Hernández, K. J. Montes Mata, and F. Valenzuela Jurado, “Autoeficacia para el ejercicio físico antes y durante la Pandemia Covid-19 (Self-efficacy for physical exercise before and during the Covid-19 Pandemic)”, Retos, vol. 47, pp. 1041–1045, Jan. 2023, doi: 10.47197/retos.v47.90792.