Justo, J. M. R. M., C. S. S. Graça, y M. S. A. Martins. «The Scale about the Motivation for Pre-Natal Communication (SMPNC): A New Psychometric Instrument Dedicated to the Assessment of the Fetus». Revista INFAD de Psicología. International Journal of Developmental and Educational Psychology. 1, no. 1 (julio 3, 2019): 29–40. Accedido mayo 4, 2024. https://revista.infad.eu/index.php/IJODAEP/article/view/1381.