Hayes, R., Marsh, K., & Snow, R. (1992). Case-control studies of severe malaria.
Chicago Style aipamenaHayes, R., K. Marsh, and R. Snow. Case-control Studies of Severe Malaria. 1992.
MLA aipamenaHayes, R., et al. Case-control Studies of Severe Malaria. 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.