Não informado. (1987). NEED: News environment energy development. Unit of Documentation and Liaison on Ecodevelopment.
Citação do estilo Chicago (17ª ed.)Não informado. NEED: News Environment Energy Development. Paris: Unit of Documentation and Liaison on Ecodevelopment, 1987.
Citação MLA (8ª ed.)Não informado. NEED: News Environment Energy Development. Unit of Documentation and Liaison on Ecodevelopment, 1987.
警告：这些引文格式不一定是100％准确.