World Resources Institute & Cruz, M. C. (1992). Population growth, poverty, and environmental stress: Frontier migration in the Philippines and Costa Rica. World Resources Institute.
Chicago-Zitierstil (17. Ausg.)World Resources Institute und Maria Concepcion Cruz. Population Growth, Poverty, and Environmental Stress: Frontier Migration in the Philippines and Costa Rica. [Washington, D.C.]: World Resources Institute, 1992.
MLA-Zitierstil (9. Ausg.)World Resources Institute und Maria Concepcion Cruz. Population Growth, Poverty, and Environmental Stress: Frontier Migration in the Philippines and Costa Rica. World Resources Institute, 1992.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.