Abellán, Francisco J., María T. Calvo-Llena, and Rafael Rabadán. 2015. “Harmonic Development Scale. An Integrative Proposal for the Evaluation of Children´s Development.”. Anales De Psicología / Annals of Psychology 31 (3), 837-48. https://doi.org/10.6018/analesps.31.3.199901.