APA-referens (7:e uppl.)

Lei, T., Zheng, J., Papageorghiou, A., Feng, J., Lin, M., Zhang, F., & Xie, H. (2021). Ultrasound in the prediction of birthweight discordance in dichorionic twins. Wiley.

Chicago-referens (17:e uppl.)

Lei, T., J. Zheng, AT Papageorghiou, J-L Feng, M-F Lin, F. Zhang, och H-N Xie. Ultrasound in the Prediction of Birthweight Discordance in Dichorionic Twins. Wiley, 2021.

MLA-referens (9:e uppl.)

Lei, T., et al. Ultrasound in the Prediction of Birthweight Discordance in Dichorionic Twins. Wiley, 2021.