APA

World Congress on National Parks and Protected Areas (IVth : 1992 feb. 10 - 21 : Caracas), Barzetti V., . (1993). Park and progress : protected areas and economic devolopment in lattin American and the Caribean. Cambridge: International Union for Conservation of Nature (IUCN).

Chicago

World Congress on National Parks and Protected Areas (IVth : 1992 feb. 10 - 21 : Caracas), Barzetti Valerie, . 1993. Park and progress : protected areas and economic devolopment in lattin American and the Caribean. Cambridge: International Union for Conservation of Nature (IUCN).

Harvard

World Congress on National Parks and Protected Areas (IVth : 1992 feb. 10 - 21 : Caracas), Barzetti V., . (1993). Park and progress : protected areas and economic devolopment in lattin American and the Caribean. Cambridge: International Union for Conservation of Nature (IUCN).

MLA

World Congress on National Parks and Protected Areas (IVth : 1992 feb. 10 - 21 : Caracas), Barzetti Valerie, . Park and progress : protected areas and economic devolopment in lattin American and the Caribean. Cambridge: International Union for Conservation of Nature (IUCN). 1993.