The WSU Library holds a wealth of information that might be of interest to you. Below you will find examples of some of the resources available on the topic of Language development.
Handbook of Child Language by 
Handbook of Child Language Acquisition by
How Children Learn the Meanings of Words by Here are some interesting books that are available for one-month checkout from the WSU Library. You can check them out using your Shocker Card.
Child Language Acquisition by 
Discovery of Spoken Language by 
First Language Acquisition by 
How Language Comes to Children by 
If a Chimpanzee Could Talk by 
Language Instinct by 
