Dyfyniad APA
Facts on File, Inc. (2007). The Facts on File encyclopedia of health and medicine. Volume 4. Facts On File.
Dyfyniad Arddull Chicago
Facts on File, Inc. The Facts on File Encyclopedia of Health and Medicine. Volume 4. New York, NY: Facts On File, 2007.
Dyfyniad MLA
Facts on File, Inc. The Facts on File Encyclopedia of Health and Medicine. Volume 4. Facts On File, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.