Anggriani, D. D., L. Herawati, and E. Ernawati. “Parity As Failure Determinants of Labor Induction in Bangka Belitung”. Majalah Obstetri & Ginekologi, vol. 24, no. 3, Mar. 2018, pp. 79-83, doi:10.20473/mog.V24I32016.79-83.