@book{305015,
	author = {Monica, Danielle R.},
	title = {The Picture Exchange Communication System (PECS) and its effect on communicative abilities in Rubinstein-Taybi Syndrome: A retrospective case study},
	publisher = {California State University},
	year = {2016},
	url = {http://pqdtopen.proquest.com/doc/1776598118.html?FMT=ABS}
}