APA (7th ed.) Zitazioa

Wackernagel, M., & Rees, W. (1996). Our ecological footprint: Reducing human impact on the Earth. New Society Publishers.

Chicago Style (17th ed.) Zitazioa

Wackernagel, Mathis, eta William Rees. Our Ecological Footprint: Reducing Human Impact on the Earth. Victoria: New Society Publishers, 1996.

MLA (9th ed.) Zitazioa

Wackernagel, Mathis, eta William Rees. Our Ecological Footprint: Reducing Human Impact on the Earth. New Society Publishers, 1996.