Saifullah Idris, R. M., Usman, N., & Tabrani ZA, H. (1). Epidemiology and psychology in handling the psycho-social problem Covid-19. Opción, 36(91), 1310-1333. Recuperado a partir de http://www.produccioncientifica.luz.edu.ve/index.php/opcion/article/view/32502