APA (7th ed.) Zitazioa

Parzybok. Cannabis Consulting. University Press of New England.

Chicago Style (17th ed.) Zitazioa

Parzybok. Cannabis Consulting. University Press of New England.

MLA (9th ed.) Zitazioa

Parzybok. Cannabis Consulting. University Press of New England.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.