Kour, G., S. Sharma, and G. Singh. “Effectiveness of Single Shot Spinal Analgesia With 0.2% Ropivacaine in Comparison to 0.2% Levobupivacaine for Labour Analgesia”. International Journal of Research in Medical Sciences, vol. 12, no. 12, Nov. 2024, pp. 4617-21, doi:10.18203/2320-6012.ijrms20243716.