APA aipamena

Brambati, B., Oldrini, A., Simoni, G., Terzoli, G. L., Romitti, L., Rossella, F., & Ferrari, M. (1984). First trimester fetal karyotyping in twin pregnancy.

Chicago Style aipamena

Brambati, B., A. Oldrini, G. Simoni, G L. Terzoli, L. Romitti, F. Rossella, and M. Ferrari. First Trimester Fetal Karyotyping in Twin Pregnancy. 1984.

MLA aipamena

Brambati, B., et al. First Trimester Fetal Karyotyping in Twin Pregnancy. 1984.