Sumber:

– https://www.breastfeeding.asn.au/bf-info/common-concerns–mum/sore-cracked-nipples
– https://www.healthline.com/health/parenting/sore-nipple-breastfeeding#milk-bleb
– https://www.laleche.org.uk/comfortable-breastfeeding/
– https://www.pregnancybirthbaby.org.au/sore-cracked-or-bleeding-nipples
– https://www.whattoexpect.com/first-year/breastfeeding/sore-cracked-painful-nipples-breastfeeding/