APA (7th ed.) Zitazioa
ebrary, Inc, & Davis, M. P. (2009). Opioids in cancer pain (2nd ed.). Oxford University Press.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, eta Mellar P. Davis. Opioids in Cancer Pain. 2nd ed. Oxford ; New York: Oxford University Press, 2009.
MLA (9th ed.) Zitazioa
ebrary, Inc, eta Mellar P. Davis. Opioids in Cancer Pain. 2nd ed. Oxford University Press, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.