Cruz, M. C., Meyer, C. A., Repetto, R., & Woodward, R. (1992). Population growth, poverty, and environmental stress: Frontier migration in the Philippines and Costa Rica. World Resources Institute.
Chicago-viite (17. p.)Cruz, Maria Concepcion, Carrie A. Meyer, Robert Repetto, ja Richard Woodward. Population Growth, Poverty, and Environmental Stress: Frontier Migration in the Philippines and Costa Rica. Washington, D.C: World Resources Institute, 1992.
MLA-viite (9. p.)Cruz, Maria Concepcion, et al. Population Growth, Poverty, and Environmental Stress: Frontier Migration in the Philippines and Costa Rica. World Resources Institute, 1992.
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