Dokumentuaren aipamena

APA (7th ed.) Zitazioa
Campbell, S., Fraser, A., Holliss, B., Schmid, J., & O'Toole, P. W. (1997). Evidence for ethnic tropism of Helicobacter pylori. Infect Immun.
Chicago Style (17th ed.) Zitazioa
Campbell, S., A. Fraser, B. Holliss, J. Schmid, eta P W. O'Toole. "Evidence for Ethnic Tropism of Helicobacter Pylori." Infect Immun 1997.
MLA (9th ed.) Zitazioa
Campbell, S., et al. "Evidence for Ethnic Tropism of Helicobacter Pylori." Infect Immun, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.