Citação norma APA

World Health Organization. Regional Office for Europe. (2000). Air quality guidelines for Europe (2nd ed.). World Health Organization, Regional Office for Europe.

Citação norma Chicago

World Health Organization. Regional Office for Europe. Air Quality Guidelines for Europe. 2nd ed. Copenhagen: World Health Organization, Regional Office for Europe, 2000.

Citação norma MLA

World Health Organization. Regional Office for Europe. Air Quality Guidelines for Europe. 2nd ed. World Health Organization, Regional Office for Europe, 2000.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.