APA (7th ed.) Zitazioa
JOHNSTON, L., & ET AL. (1994). NATIONAL SURVEY RESULTS ON DRUG USE FROM THE MONITORING THE FUTURE STUDY, 1975-1993. VOLUME I: SECONDARY SCHOOL STUDENTS. NATIONAL INSTITUTE ON DRUG ABUSE.
Chicago Style (17th ed.) Zitazioa
JOHNSTON, L.D, eta ET AL. NATIONAL SURVEY RESULTS ON DRUG USE FROM THE MONITORING THE FUTURE STUDY, 1975-1993. VOLUME I: SECONDARY SCHOOL STUDENTS. ROCKVILLE, MD (USA): NATIONAL INSTITUTE ON DRUG ABUSE, 1994.
MLA (9th ed.) Zitazioa
JOHNSTON, L.D, eta ET AL. NATIONAL SURVEY RESULTS ON DRUG USE FROM THE MONITORING THE FUTURE STUDY, 1975-1993. VOLUME I: SECONDARY SCHOOL STUDENTS. NATIONAL INSTITUTE ON DRUG ABUSE, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.