Khajotia, Santosh, Madhuri Sharma, Mool Chand Khichar, Manoj Gupta, and Kavita Choudhary. “Study of Pre Induction Transvaginal Ultra-Sonographic Cervical Length and Its Comparison With Bishop Score in Predicting Successful Labor Induction”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 10, no. 6 (May 27, 2021): 2335–2340. Accessed December 4, 2025. https://www.ijrcog.org/index.php/ijrcog/article/view/10185.