APA (7e ed.) Bronvermelding

(2000). Air quality guidelines for Europe (Second edition.). World Health Organization Regional Office for Europe.

Chicago (17e ed.) Bronvermelding

Air Quality Guidelines for Europe. Second edition. Copenhagen, Denmark: World Health Organization Regional Office for Europe, 2000.

MLA (9e ed.) Bronvermelding

Air Quality Guidelines for Europe. Second edition. World Health Organization Regional Office for Europe, 2000.