Moreira, Nilson Roberto, Vitor da Fonseca, and Alves Diniz. 2008. “Motor Proficiency in Normal Children and With Learning Difficulty: A Comparative and Correlational Study Based on the Motor Proficiency Test of Bruininks-Oseretsky”. Journal of Physical Education 11 (1), 11-26. https://doi.org/10.4025/jphyseduc.v11i1.3786.