Collins, B. J. (1996). Helicobacter pylori: Is it all in the family?
Chicago Style aipamenaCollins, B J. Helicobacter Pylori: Is It All in the Family? 1996.
MLA aipamenaCollins, B J. Helicobacter Pylori: Is It All in the Family? 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.