Pulvertaft, R. J. V. (1956). Poliomyelitis Vaccine.
Chicago Style aipamenaPulvertaft, R. J. V. Poliomyelitis Vaccine. 1956.
MLA aipamenaPulvertaft, R. J. V. Poliomyelitis Vaccine. 1956.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena