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Diakses 24 September 2019Everyday Health. https://www.everydayhealth.com/treatment/womens-health/ways-to-relieve-period-cramps/
Diakses 24 September 2019Family Doctor. https://familydoctor.org/condition/dysmenorrhea/
Diakses 24 September 2019Mayo Clinic. https://www.mayoclinic.org/diseases-conditions/menstrual-cramps/diagnosis-treatment/drc-20374944
Diakses 24 September 2019Mayo Clinic. https://www.mayoclinic.org/diseases-conditions/menstrual-cramps/symptoms-causes/syc-20374938
Diakses 24 September 2019Very Well Health. https://www.verywellhealth.com/an-overview-of-oligomenorrhea-4584379
Diakses 24 September 2019