APA aipamena

Polakoff, S. (1987). Time for action on hepatitis B immunisation.

Chicago Style aipamena

Polakoff, Sheila. Time for Action On Hepatitis B Immunisation. 1987.

MLA aipamena

Polakoff, Sheila. Time for Action On Hepatitis B Immunisation. 1987.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.