Harvard Health. https://www.health.harvard.edu/medical-tests-and-procedures/abortion-termination-of-pregnancy-a-to-z
Diakses 21 Februari 2020NCBI. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4922947/
Diakses 21 Februari 2020Patient. https://patient.info/womens-health/abortion-termination-of-pregnancy
Diakses 21 Februari 2020