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Diakses pada 03 Agustus 2020Medical News Today. https://www.medicalnewstoday.com/articles/321250#how-much-water
Diakses pada 03 Agustus 2020Food.ndtv. https://food.ndtv.com/food-drinks/drink-warm-water-before-bed-for-a-health-living-2006370
Diakses pada 03 Agustus 2020