Cook, R. (1991). Vital signs. Putnam, Rupa.
Chicago Style aipamenaCook, Robin. Vital Signs. New York : New Delhi: Putnam, Rupa, 1991.
MLA aipamenaCook, Robin. Vital Signs. Putnam, Rupa, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.