Παραπομπή σε μορφή APA (7η εκδ.)

Hough, M. (2004). Cities and natural process: A basis for sustainability (2nd ed.). Routledge.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hough, Michael. Cities and Natural Process: A Basis for Sustainability. 2nd ed. London ; New York: Routledge, 2004.

Παραπομπή σε μορφή MLA (9th εκδ.)

Hough, Michael. Cities and Natural Process: A Basis for Sustainability. 2nd ed. Routledge, 2004.