Valentine, C., & Bright, P. (1991). Preventing needlestick injuries.
Chicago Style aipamenaValentine, C., and P. Bright. Preventing Needlestick Injuries. 1991.
MLA aipamenaValentine, C., and P. Bright. Preventing Needlestick Injuries. 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.