RUIZ HERNÁNDEZ, Conrado.
 An Experimental Evaluation of Vygotsky's Zone of Proximal Development.
<strong>CIENCIA ergo-sum</strong>, [S.l.], v. 22, n. 2, p. 167-171, june 2015.
ISSN 2395-8782.
Available at: &lt;<a href="https://cienciaergosum.uaemex.mx/article/view/7719" target="_new">https://cienciaergosum.uaemex.mx/article/view/7719</a>&gt;. Date accessed: 09 sep. 2026.