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Signs of Speech and Language Disorders. (2021, August 23). Identify The Signs. https://identifythesigns.org/signs-of-speech-and-language-disorders/

How To Help A Child With Receptive-Expressive Language Disorder. (2019, August 29). YouTube. https://www.youtube.com/watch?v=84oAdEfXY3Y

Admin, K. S. W. (2016, November 26). Stages of Language Development Chart. Kid Sense Child Development. https://childdevelopment.com.au/resources/child-development-charts/stages-of-language-development-chart/

Speech and Language Developmental Milestones. (2017, March 6). NIDCD. https://www.nidcd.nih.gov/health/speech-and-language

Language and Speech Disorders in Children | CDC. (2021, February 9). Centers for Disease Control and Prevention. https://www.cdc.gov/ncbddd/childdevelopment/language-disorders.html

Speech and Language Disorders - Symptoms and Causes. (2017). Speech and Language Disorder. https://www.pennmedicine.org/for-patients-and-visitors/patient-information/conditions-treated-a-to-z/speech-and-language-disorders

Kahn, A. (2019, September 20). Speech Disorders. Healthline. https://www.healthline.com/health/speech-disorders#causes