The Healthy
https://www.thehealthy.com/aging/mind-memory/brain-development/
Diakses 28 AprilResearch gate
https://www.researchgate.net/publication/47646160_The_Basics_of_Brain_Development
Diakses 28 AprilMedical news today
https://www.medicalnewstoday.com/articles/324044#eggs
Diakses 28 April