Harvard Medical School. https://www.health.harvard.edu/womens-health/perimenopause-rocky-road-to-menopause
Diakses pada 30 April 2019Mayo Clinic. https://www.mayoclinic.org/diseases-conditions/perimenopause/symptoms-causes/syc-20354666
Diakses pada 30 April 2019WebMD. https://www.webmd.com/menopause/guide/guide-perimenopause#1
Diakses pada 30 April 2019NIH. https://www.nia.nih.gov/health/what-menopause
Diakses pada 3 Oktober 2020