APA (7th ed.) Zitazioa
Grahek, N. (2007). Feeling pain and being in pain (2nd ed.). MIT.
Chicago Style (17th ed.) Zitazioa
Grahek, Nikola. Feeling Pain and Being in Pain. 2nd ed. Cambridge, MA ; London: MIT, 2007.
MLA (9th ed.) Zitazioa
Grahek, Nikola. Feeling Pain and Being in Pain. 2nd ed. MIT, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.