APA (7th ed.) Zitazioa
HSER, Y., & ET AL. (1991). A SURVIVAL ANALYSIS OF GENDER AND ETHNIC DIFFERENCES IN RESPONSIVENESS TO METHADONE MAINTENANCE TREATMENT.
Chicago Style (17th ed.) Zitazioa
HSER, Y., eta ET AL. A SURVIVAL ANALYSIS OF GENDER AND ETHNIC DIFFERENCES IN RESPONSIVENESS TO METHADONE MAINTENANCE TREATMENT. 1991.
MLA (9th ed.) Zitazioa
HSER, Y., eta ET AL. A SURVIVAL ANALYSIS OF GENDER AND ETHNIC DIFFERENCES IN RESPONSIVENESS TO METHADONE MAINTENANCE TREATMENT. 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.