WAGGONER, Paul E. How Much Land Can Ten Billion People Spare for Nature?. Council for Agricultural Science and Technology (CAST), Ames, U.S.A., 1994. DOI: 10.62300/w69qgv54. Disponível em: https://publications.cast-science.org/CAST/article/view/226. Acesso em: 2 jul. 2026.