APA استشهاد

Berghella, V., Boelig, R., Roman, A., Burd, J., & Anderson, K. (2020). Decreased incidence of preterm birth during coronavirus disease 2019 pandemic. Am J Obstet Gynecol MFM.

استشهاد بنمط شيكاغو

Berghella, Vincenzo, Rupsa Boelig, Amanda Roman, Julia Burd, و Kathryn Anderson. "Decreased Incidence of Preterm Birth During Coronavirus Disease 2019 Pandemic." Am J Obstet Gynecol MFM 2020.

MLA استشهاد

Berghella, Vincenzo, et al. "Decreased Incidence of Preterm Birth During Coronavirus Disease 2019 Pandemic." Am J Obstet Gynecol MFM 2020.

تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.