APA aipamena

Purcell, T. (1891). Vaccination in Whooping-Cough.

Chicago Style aipamena

Purcell, Thomas. Vaccination in Whooping-Cough. 1891.

MLA aipamena

Purcell, Thomas. Vaccination in Whooping-Cough. 1891.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.