Cita APA

Eckholm, E. P. (1976). Losing ground: Environmental stress and world food prospects. New York: W. W. Norton.

Citación estilo Chicago

Eckholm, Erik P. Losing Ground: Environmental Stress and World Food Prospects. New York: W. W. Norton, 1976.

Cita MLA

Eckholm, Erik P. Losing Ground: Environmental Stress and World Food Prospects. New York: W. W. Norton, 1976.