APA (7th ed.) Zitazioa
Brown, L. R. (1993). The world watch reader on global environmental issues. EAEP.
Chicago Style (17th ed.) Zitazioa
Brown, Lester R. The World Watch Reader on Global Environmental Issues. Nairobi: EAEP, 1993.
MLA (9th ed.) Zitazioa
Brown, Lester R. The World Watch Reader on Global Environmental Issues. EAEP, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.