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Diakses pada 22 Agustus 2020Medical News Today. https://www.medicalnewstoday.com/articles/323099
Diakses pada 22 Agustus 2020Very Well Family. https://www.verywellfamily.com/fetal-positions-for-labor-and-birth-2759020
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Diakses pada 22 Agustus 2020Pregnancy Birth Baby. https://www.pregnancybirthbaby.org.au/baby-movements-during-pregnancy
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Diakses pada 22 Agustus 2020