CDC. https://www.cdc.gov/heartdisease/risk_factors.htm
Diakses pada 05 Maret 2020
Medical News Today. https://www.medicalnewstoday.com/articles/237191#types
Diakses pada 05 Maret 2020
Medline Plus. https://medlineplus.gov/howtopreventheartdisease.html
Diakses pada 05 Maret 2020
Healthline. https://www.healthline.com/health/heart-disease/causes-risks#causes
Diakses pada 05 Maret 2020