APA (7e ed.) Bronvermelding

Appleton, J. (2014). Values in sustainable development. Routledge.

Chicago (17e ed.) Bronvermelding

Appleton, Jack. Values in Sustainable Development. Oxon, [England]: Routledge, 2014.

MLA (9e ed.) Bronvermelding

Appleton, Jack. Values in Sustainable Development. Routledge, 2014.