APA استشهاد

Blewitt, J. (2018). Understanding sustainable development (3.). Routledge.

استشهاد بنمط شيكاغو

Blewitt, John. Understanding Sustainable Development. 3. London: Routledge, 2018.

MLA استشهاد

Blewitt, John. Understanding Sustainable Development. 3. Routledge, 2018.