Dyfyniad APA

Steer, P., Smith, J. R., & Barton, S. (1996). Recent advances in obstetrics.

Dyfyniad Arddull Chicago

Steer, Philip, J Richard Smith, and Simon Barton. Recent Advances in Obstetrics. 1996.

Dyfyniad MLA

Steer, Philip, J Richard Smith, and Simon Barton. Recent Advances in Obstetrics. 1996.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.