APA Citatie

World Health Organization. Geneva. (1997). Nitrogen Oxides (2nd ed.). WHO.

Chicago Style citaat

World Health Organization. Geneva. Nitrogen Oxides. 2nd ed. Geneva: WHO, 1997.

MLA citatie

World Health Organization. Geneva. Nitrogen Oxides. 2nd ed. WHO, 1997.

Let op: Deze citaties zijn niet altijd 100% accuraat.