Rootman, I. (1980). Drug-abuse reporting systems. World Health Organization.
Chicago Style aipamenaRootman, I. Drug-abuse Reporting Systems. Geneva: World Health Organization, 1980.
MLA aipamenaRootman, I. Drug-abuse Reporting Systems. World Health Organization, 1980.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.