WHO. (1992). Our planet, our health. Genève: WHO.
Chicago Style aipamenaWHO. Our Planet, Our Health. Genève: WHO, 1992.
MLA aipamenaWHO. Our Planet, Our Health. Genève: WHO, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena