Cita APA

Zimmermann, R., & Zimmermann, R. (1982). Environmental impact of forestry. Rome: Food and Agriculture Organization of the United Nations.

Citación estilo Chicago

Zimmermann, Robert, y Robert Zimmermann. Environmental Impact of Forestry. Rome: Food and Agriculture Organization of the United Nations, 1982.

Cita MLA

Zimmermann, Robert, y Robert Zimmermann. Environmental Impact of Forestry. Rome: Food and Agriculture Organization of the United Nations, 1982.