Dyfyniad APA

American Board of Internal Medicine. (2008). Perspectives. Review Committee.

Dyfyniad Arddull Chicago

American Board of Internal Medicine. Perspectives. Philadelphia: Review Committee, 2008.

Dyfyniad MLA

American Board of Internal Medicine. Perspectives. Review Committee, 2008.

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