MYERS, N. El atlas Gaia de la gestión del planeta. MIDDELETON, N. Atlas of world issues. MIDDELETON, N. Atlas of environmental issues. LEAN, G. ; HINRICHSEN, D. ; MARKHAM, A. Atlas of the environment

Myers, N. (ed.) (1987), El Atlas Gaia de la Gestión del Planeta, Blurne, Madrid. Middeleton, N. (1988), Atlas of World Issues, Oxford University Press, Oxford. Middeleton, N. (1988), Atlas of Environmental Issues, Oxford University Press, Oxford. Lean, G., Hinrichsen, D. i Markham, A. (1990), Atlas of the Environment, Arrow Books, Londres.