Dyfyniad APA

Christopher, F., & Davis, L. (1968). Textbook of surgery. Saunders.

Dyfyniad Arddull Chicago

Christopher, Frederick, and Loyal Davis. Textbook of Surgery. Philadelphia: Saunders, 1968.

Dyfyniad MLA

Christopher, Frederick, and Loyal Davis. Textbook of Surgery. Saunders, 1968.

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