APA (7e ed.) Bronvermelding

(2005). enviromental standards and competitiveness of key economic sectors. united nations.

Chicago (17e ed.) Bronvermelding

Enviromental Standards and Competitiveness of Key Economic Sectors. new york: united nations, 2005.

MLA (9e ed.) Bronvermelding

Enviromental Standards and Competitiveness of Key Economic Sectors. united nations, 2005.

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