APA ציטוט

Wackernagel, M. (1996). Our ecological footprint: Reducing human impact on the earth. Gabriola Island: New Society Publishers.

Trích dẫn kiểu Chicago

Wackernagel, Mathis. Our Ecological Footprint: Reducing Human Impact On the Earth. Gabriola Island: New Society Publishers, 1996.

ציטוט MLA

Wackernagel, Mathis. Our Ecological Footprint: Reducing Human Impact On the Earth. Gabriola Island: New Society Publishers, 1996.