APA

Workshop on Population and Natural Resources (1989 nov. 27 : Gland S., . (1990). Case studies in population and natural resources. Gland: International Union for Conservation of Nature (IUCN). Population and Natural Resources Programme.

Chicago

Workshop on Population and Natural Resources (1989 nov. 27 : Gland Switzerland), . 1990. Case studies in population and natural resources. Gland: International Union for Conservation of Nature (IUCN). Population and Natural Resources Programme.

Harvard

Workshop on Population and Natural Resources (1989 nov. 27 : Gland S., . (1990). Case studies in population and natural resources. Gland: International Union for Conservation of Nature (IUCN). Population and Natural Resources Programme.

MLA

Workshop on Population and Natural Resources (1989 nov. 27 : Gland Switzerland), . Case studies in population and natural resources. Gland: International Union for Conservation of Nature (IUCN). Population and Natural Resources Programme. 1990.