Não informado. (1971). IEEE Power Engineering Society. Institute of Electrical and Electronics Engineers.
Citação do estilo Chicago (17ª ed.)Não informado. IEEE Power Engineering Society. New York: Institute of Electrical and Electronics Engineers, 1971.
Citação MLA (8ª ed.)Não informado. IEEE Power Engineering Society. Institute of Electrical and Electronics Engineers, 1971.
警告：这些引文格式不一定是100％准确.