Darnay, B. T. (1997). Consultants and consulting organizations directory. Gale Research.
芝加哥风格引文Darnay, Brigitte T. Consultants and Consulting Organizations Directory. Detroit, Mich: Gale Research, 1997.
MLA引文Darnay, Brigitte T. Consultants and Consulting Organizations Directory. Gale Research, 1997.
警告：这些引文格式不一定是100％准确.