Dyfyniad APA

Cully, G. P. (1993). Preventing colorectal cancer. College of Family Physicians of Canada.

Dyfyniad Arddull Chicago

Cully, G. P. Preventing Colorectal Cancer. College of Family Physicians of Canada, 1993.

Dyfyniad MLA

Cully, G. P. Preventing Colorectal Cancer. College of Family Physicians of Canada, 1993.

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