Παραπομπή APA

Roorda, N. (2012). Fundamentals of sustainable development. Earthscan.

Παραπομπή Chicago Style

Roorda, Niko. Fundamentals of Sustainable Development. New York, NY: Earthscan, 2012.

Παραπομπή MLA

Roorda, Niko. Fundamentals of Sustainable Development. Earthscan, 2012.