Cita APA (7a ed.)
Dasmann, R. (1973). A system for defining and classifyng natural regions for purposes of conservation. IUCN.
Cita Chicago Style (17a ed.)
Dasmann, R.F. A System for Defining and Classifyng Natural Regions for Purposes of Conservation. Morges, Switzerland: IUCN, 1973.
Cita MLA (9a ed.)
Dasmann, R.F. A System for Defining and Classifyng Natural Regions for Purposes of Conservation. IUCN, 1973.
Precaución: Estas citas no son 100% exactas.