APA (7th ed.) Zitazioa
ROFFMAN, R., & ET AL. (2007). CANNABIS DEPENDENCE. ITS NATURE, CONSEQUENCES AND TREATMENT. CAMBRIDGE UNIVERSITY PRESS.
Chicago Style (17th ed.) Zitazioa
ROFFMAN, R.A, eta ET AL. CANNABIS DEPENDENCE. ITS NATURE, CONSEQUENCES AND TREATMENT. CAMBRIDGE: CAMBRIDGE UNIVERSITY PRESS, 2007.
MLA (9th ed.) Zitazioa
ROFFMAN, R.A, eta ET AL. CANNABIS DEPENDENCE. ITS NATURE, CONSEQUENCES AND TREATMENT. CAMBRIDGE UNIVERSITY PRESS, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.