Παραπομπή σε μορφή APA (7η εκδ.)

Harrison, P. The third revolution: Population, environment and a sustainable world. Penguin Books.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Harrison, Paul. The Third Revolution: Population, Environment and a Sustainable World. Penguin Books.

Παραπομπή σε μορφή MLA (9th εκδ.)

Harrison, Paul. The Third Revolution: Population, Environment and a Sustainable World. Penguin Books.