UNEP. (1979). Directory of institutions and individuals active in environmentally sound and appropriate technologies. Pergamon press.
Style de citation ChicagoUNEP. Directory of Institutions and Individuals Active in Environmentally Sound and Appropriate Technologies. NewYork: Pergamon press, 1979.
Style de citation MLAUNEP. Directory of Institutions and Individuals Active in Environmentally Sound and Appropriate Technologies. Pergamon press, 1979.
Attention : ces citations peuvent ne pas être correctes à 100%.