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Diakses pada 11 Juli 2019NHS. https://www.nhs.uk/conditions/contraception/which-method-suits-me/?tabname=methods-of-contraception
Diakses pada 11 Juli 2019World Health Organization. https://www.who.int/news-room/fact-sheets/detail/family-planning-contraception
Diakses pada 11 Juli 2019