National Research Council (U.S.). Committee on Budget Estimating Techniques. (1990). Improving the accuracy of early cost estimates for federal construction projects. National Academy Press.
芝加哥风格引文National Research Council (U.S.). Committee on Budget Estimating Techniques. Improving the Accuracy of Early Cost Estimates for Federal Construction Projects. Washington, D.C.: National Academy Press, 1990.
MLA引文National Research Council (U.S.). Committee on Budget Estimating Techniques. Improving the Accuracy of Early Cost Estimates for Federal Construction Projects. National Academy Press, 1990.
警告：这些引文格式不一定是100％准确.