Dyfyniad APA
Perkins, L. E., & Perkins, S. (2008). Multiple sclerosis: Your legal rights (3rd ed.). Demos Health.
Dyfyniad Arddull Chicago
Perkins, Lanny E., and Sara Perkins. Multiple Sclerosis: Your Legal Rights. 3rd ed. New York: Demos Health, 2008.
Dyfyniad MLA
Perkins, Lanny E., and Sara Perkins. Multiple Sclerosis: Your Legal Rights. 3rd ed. Demos Health, 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.