APA Citatie

Covington, G. (2010). International encyclopedia of sustainable development. Apple academic.

Chicago Style citaat

Covington, Gareth. International Encyclopedia of Sustainable Development. Oakville: Apple academic, 2010.

MLA citatie

Covington, Gareth. International Encyclopedia of Sustainable Development. Apple academic, 2010.

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