Jiménez Lagares, I., Muñoz Tinoco, V., Marande, G. and García Bacete, F. J. (2021) “Size and sexual configuration of informal play groups in the classroom throughout elementary education”., International Journal of Developmental and Educational Psychology. Revista INFAD de Psicología, 2(2), pp. 115–120. doi: 10.17060/ijodaep.2021.n2.v2.2216.