Não informado. (1987). NEED: News environment energy development. Unit of Documentation and Liaison on Ecodevelopment.
Chicago-referens (17:e uppl.)Não informado. NEED: News Environment Energy Development. Paris: Unit of Documentation and Liaison on Ecodevelopment, 1987.
MLA-referens (8:e uppl.)Não informado. NEED: News Environment Energy Development. Unit of Documentation and Liaison on Ecodevelopment, 1987.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.