APA (7th ed.) Zitazioa
(2007). Black Gold: Wake up and smell the coffee. Speak- it Production.
Chicago Style (17th ed.) Zitazioa
Black Gold: Wake Up and Smell the Coffee. UK: Speak- it Production, 2007.
MLA (9th ed.) Zitazioa
Black Gold: Wake Up and Smell the Coffee. Speak- it Production, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.