APA (7th ed.) Zitazioa
SOBELL, L., & ET AL. (1990). ALCOHOL OR TOBACCO RESEARCH VERSUS ALCOHOL AND TOBACCO RESEARCH.
Chicago Style (17th ed.) Zitazioa
SOBELL, L.C, eta ET AL. ALCOHOL OR TOBACCO RESEARCH VERSUS ALCOHOL AND TOBACCO RESEARCH. 1990.
MLA (9th ed.) Zitazioa
SOBELL, L.C, eta ET AL. ALCOHOL OR TOBACCO RESEARCH VERSUS ALCOHOL AND TOBACCO RESEARCH. 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.