Cleveland Clinic. https://health.clevelandclinic.org/the-benefits-of-vitamin-c-why-your-child-needs-it/Healthline. https://www.healthline.com/nutrition/how-much-vitamin-c-should-i-take-daily
Diakses pada 25 Agustus 2020Medical News Today. https://www.medicalnewstoday.com/articles/325067
Diakses pada 25 Agustus 2020Parenting First Cry. https://parenting.firstcry.com/articles/vitamin-c-for-kids-health-benefits-daily-intake-and-more/
Diakses pada 25 Agustus 2020