Dyfyniad APA

O'Grady, J. P., Gimovsky, M. L., & McIlhargie, C. J. (1995). Operative obstetrics. Williams & Wilkins.

Dyfyniad Arddull Chicago

O'Grady, John Patrick, Martin L. Gimovsky, and Cyril J. McIlhargie. Operative Obstetrics. Baltimore: Williams & Wilkins, 1995.

Dyfyniad MLA

O'Grady, John Patrick, et al. Operative Obstetrics. Williams & Wilkins, 1995.

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