Fuld, L. M. (2006). The Secrete Language of Competitive Intelligence. Crown Business.
芝加哥风格引文Fuld, Leonard M. The Secrete Language of Competitive Intelligence. Crown Business, 2006.
MLA引文Fuld, Leonard M. The Secrete Language of Competitive Intelligence. Crown Business, 2006.
警告：这些引文格式不一定是100％准确.