Não informado. (2000). Technical news from the National Bureau of Standards. U.S. Department of Commerce.
Citação do estilo Chicago (17ª ed.)Não informado. Technical News from the National Bureau of Standards. Washington: U.S. Department of Commerce, 2000.
Citação MLA (8ª ed.)Não informado. Technical News from the National Bureau of Standards. U.S. Department of Commerce, 2000.
警告：这些引文格式不一定是100％准确.