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Diakses pada 29 Maret 2019Healthline. https://www.healthline.com/health/beauty-skin-care/how-to-get-rid-of-dark-spots
Diakses pada 29 Maret 2019Very Well Health. https://www.verywellhealth.com/causes-of-dark-spots-1069545
Diakses pada 29 Maret 2019