Cita APA (7a ed.)
Regional Conference of the North-West Europe Committee, 9a. (1972). Environmental education in an urban society. IUCN.
Cita Chicago Style (17a ed.)
Regional Conference of the North-West Europe Committee, 9a. Environmental Education in an Urban Society. Morges: IUCN, 1972.
Cita MLA (9a ed.)
Regional Conference of the North-West Europe Committee, 9a. Environmental Education in an Urban Society. IUCN, 1972.
Precaución: Estas citas no son 100% exactas.