Ferdous, J. A., N. N. Khanam, M. R. Begum, and S. Akhter. “Cervical Ripening: Comparative Study Between Intracervical Balooning by Foley’s Catheter and Intravaginal Misoprostol Tablet”. Journal of Bangladesh College of Physicians and Surgeons, vol. 27, no. 1, Jan. 2010, pp. 5-12, doi:10.3329/jbcps.v27i1.4237.