Healthline. https://www.healthline.com/health/xyy-syndrome
Diakses pada 14 November 2019Everyday Health. https://www.everydayhealth.com/xyy-syndrome/guide/
Diakses pada 14 November 2019Kids Health. https://kidshealth.org/en/parents/xyy-syndrome.html
Diakses pada 14 November 2019