@inbook{6738322, author={James S. Andrews and Heidi M. Feldman}, editor={Rudolph, Colin D. and Rudolph, Abraham M. and Lister, George E. and First, Lewis R. and Gershon, Anne A.}, title={Chapter 86. Language Delay}, booktitle={Rudolph's Pediatrics, 22e}, publisher={The McGraw-Hill Companies}, address={New York, NY}, year={2011}, url={accesspediatrics.mhmedical.com/content.aspx?aid=6738322} }