Cita APA (7th ed.)
SILVA, M., & ET AL. (1994). USE OF MARIJUANA AND OTHER DRUGS BY COLLEGE STUDENTS OF SAO PAULO, BRAZIL.
Cita Chicago (17th ed.)
SILVA, M.T, i ET AL. USE OF MARIJUANA AND OTHER DRUGS BY COLLEGE STUDENTS OF SAO PAULO, BRAZIL. 1994.
Cita MLA (9th ed.)
SILVA, M.T, i ET AL. USE OF MARIJUANA AND OTHER DRUGS BY COLLEGE STUDENTS OF SAO PAULO, BRAZIL. 1994.
Atenció: Aquestes cites poden no estar 100% correctes.