APA aipamena

World Health Organization. (1991). Environmental health criteria 148. World Health Organization.

Chicago Style aipamena

World Health Organization. Environmental Health Criteria 148. Geneva: World Health Organization, 1991.

MLA aipamena

World Health Organization. Environmental Health Criteria 148. World Health Organization, 1991.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.