1. Augmentative & Alternative Communication Center (2014a). Vocabulary List for Preschool Age. Retrieved from .
2. Augmentative & Alternative Communication Center (2014b). 20–30 Year-Old Non-Disabled Adult Vocabulary. Retrieved from .
3. Best books for children;Barr,2006
4. Arboretum: bureaucratic and carbohydrates: preschoolers’ exposure to rare vocabulary at home;Beals;First Language,1995
5. Text talk: capturing the benefits of read-aloud experiences for young children;Beck;The Reading Teacher,2001