APA (7th ed.) Zitazioa
Choy, E. (2009). Fibromyalgia syndrome. Oxford University Press.
Chicago Style (17th ed.) Zitazioa
Choy, Ernest. Fibromyalgia Syndrome. Oxford ; New York: Oxford University Press, 2009.
MLA (9th ed.) Zitazioa
Choy, Ernest. Fibromyalgia Syndrome. Oxford University Press, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.