Gwatkin, R. (1945). Studies in Pullorum Disease: VII. Transmission of Infection to Healthy Birds by Contact.
Chicago Style aipamenaGwatkin, Ronald. Studies in Pullorum Disease: VII. Transmission of Infection to Healthy Birds By Contact. 1945.
MLA aipamenaGwatkin, Ronald. Studies in Pullorum Disease: VII. Transmission of Infection to Healthy Birds By Contact. 1945.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.