British Standards Institution. (1977). Methods for sampling of coal and coke. British Standards Institution.
芝加哥风格引文British Standards Institution. Methods for Sampling of Coal and Coke. London: British Standards Institution, 1977.
MLA引文British Standards Institution. Methods for Sampling of Coal and Coke. British Standards Institution, 1977.
警告:这些引文格式不一定是100%准确.