APA aipamena

Snell, S. H. (1894). An Outbreak of Small-Pox: Vaccination and Revaccination.

Chicago Style aipamena

Snell, Sidney H. An Outbreak of Small-Pox: Vaccination and Revaccination. 1894.

MLA aipamena

Snell, Sidney H. An Outbreak of Small-Pox: Vaccination and Revaccination. 1894.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.