Dyfyniad APA

Wrigley, P. F., & Brookes, V. (1978). The Stomach Cancer Group.

Dyfyniad Arddull Chicago

Wrigley, P F., and V. Brookes. The Stomach Cancer Group. 1978.

Dyfyniad MLA

Wrigley, P F., and V. Brookes. The Stomach Cancer Group. 1978.

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