Hunt, R. H., & Chiverton, S. G. (1988). How does smoking harm the duodenum?
Chicago Style aipamenaHunt, Richard H., and Stephen G. Chiverton. How Does Smoking Harm the Duodenum? 1988.
MLA aipamenaHunt, Richard H., and Stephen G. Chiverton. How Does Smoking Harm the Duodenum? 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.