O"neill, R. (1977). Kernel One: Student"s Book. Paris: Hermes*.
Chicago Style aipamenaO"neill, Robert. Kernel One: Student"s Book. Paris: Hermes*, 1977.
MLA aipamenaO"neill, Robert. Kernel One: Student"s Book. Paris: Hermes*, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.