Sumarni, Amendi Nasution, Luh K Wahyuni and Trevino Pakasi 1. The Validity and Reliability Test of Modified Picture Vocabulary Test IV in 48-59 Months Old Children. Indonesian Journal of Physical Medicine and Rehabilitation. 2, 01 (1), 65 - 76. DOI:https://doi.org/10.36803/ijpmr.v2i01.228.