Ward, R., & Sabin, A. B. (1944). The Presence of Poliomyelitis Virus in Human Cases and Carriers During the Winter.
Chicago Style aipamenaWard, Robert, and Albert B. Sabin. The Presence of Poliomyelitis Virus in Human Cases and Carriers During the Winter. 1944.
MLA aipamenaWard, Robert, and Albert B. Sabin. The Presence of Poliomyelitis Virus in Human Cases and Carriers During the Winter. 1944.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.