APA (7th ed.) Zitazioa
Chu, Y. (2013). Do medical marijuana laws increase hard drug use?
Chicago Style (17th ed.) Zitazioa
Chu, Y.W.L. Do Medical Marijuana Laws Increase Hard Drug Use? 2013.
MLA (9th ed.) Zitazioa
Chu, Y.W.L. Do Medical Marijuana Laws Increase Hard Drug Use? 2013.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.