Berghella, V., & Saccone, G. (2019). Cervical assessment by ultrasound for preventing preterm delivery. Cochrane Database Syst Rev.
استشهاد بنمط شيكاغوBerghella, Vincenzo, و Gabriele Saccone. "Cervical Assessment By Ultrasound for Preventing Preterm Delivery." Cochrane Database Syst Rev 2019.
MLA استشهادBerghella, Vincenzo, و Gabriele Saccone. "Cervical Assessment By Ultrasound for Preventing Preterm Delivery." Cochrane Database Syst Rev 2019.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.