APA (7th ed.) Zitazioa
BARBER, P., & ET AL. ATTITUDES OF TEENAGERS TOWARDS CIGARETTES AND SMOKING INITIATION.
Chicago Style (17th ed.) Zitazioa
BARBER, P., eta ET AL. ATTITUDES OF TEENAGERS TOWARDS CIGARETTES AND SMOKING INITIATION.
MLA (9th ed.) Zitazioa
BARBER, P., eta ET AL. ATTITUDES OF TEENAGERS TOWARDS CIGARETTES AND SMOKING INITIATION.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.