For more information, please visit:
https://www.nidcd.nih.gov/health/speech-and-language
https://www.asha.org/public/speech/development/chart/
https://www.cdc.gov/ncbddd/actearly/milestones/index.html
https://www.mayoclinic.org/healthy-lifestyle/infant-and-toddler-health/in-depth/language-development/art-20045163
https://www.chop.edu/health-resources/age-appropriate-speech-and-language-milestones