1. Bright Futures (an AAP Publication), 4th edition. 2019. “Guidelines for Health Supervision of Infants, Children, and Adolescents.”
https://brightfutures.aap.org/Bright%20Futures%20Documents/BF4_POCKETGUIDE.pdf
[Accessed October 2020]
2. American Family Physician. May 2011. “Speech and Language Delay in Children.” https://www.aafp.org/afp/2011/0515/p1183.html
[Accessed October 2020]
3. Helpful Professor. 2020. “Parten’s 6 Stages of Play in Childhood, Explained! (2020).”
https://helpfulprofessor.com/stagesofplay/
[Accessed October 2020]
4. EncouragePlay.com. December 2015. “Social Stages of Play.”
https://www.encourageplay.com/blog/social-stages-of-play
[Accessed October 2020]
