APA (7th ed.) Zitazioa
STIMMEL, B. HEROIN ADDICTION AND METHADONE MAINTENANCE: WHEN WILL WE EVER LEARN.
Chicago Style (17th ed.) Zitazioa
STIMMEL, B. HEROIN ADDICTION AND METHADONE MAINTENANCE: WHEN WILL WE EVER LEARN.
MLA (9th ed.) Zitazioa
STIMMEL, B. HEROIN ADDICTION AND METHADONE MAINTENANCE: WHEN WILL WE EVER LEARN.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.