Cita APA

Laurence, K. M., Gregory, P. J., & Sharp, F. (1974). Prenatal detection of D trisomy.

Chicago Style Citation

Laurence, K. M., P. J. Gregory, i F. Sharp. Prenatal Detection of D Trisomy. 1974.

Cita MLA

Laurence, K. M., P. J. Gregory, i F. Sharp. Prenatal Detection of D Trisomy. 1974.