Dyfyniad APA

Winn, H. R., & Youmans, J. R. (2011). Youmans neurological surgery (6th ed.). Elsevier/Saunders.

Dyfyniad Arddull Chicago

Winn, H. Richard, and Julian R. Youmans. Youmans Neurological Surgery. 6th ed. Philadelphia, PA: Elsevier/Saunders, 2011.

Dyfyniad MLA

Winn, H. Richard, and Julian R. Youmans. Youmans Neurological Surgery. 6th ed. Elsevier/Saunders, 2011.

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