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Diakses pada 20 Januari 2021Healthline. https://www.healthline.com/health/pregnancy/signs-of-having-a-boy#finding-out-earlier
Diakses pada 20 Januari 2021Parents. https://www.parents.com/pregnancy/signs/symptoms/boy-pregnancy-symptoms-old-wives-tales-gender/
Diakses pada 20 Januari 2021