Halpin, D. W., & Daniel W. Halpin and Leland S. Riggs. (1992). Planning and Analysis of Construction Operations. New York: Wiley-Interscience.
استشهاد بنمط شيكاغوHalpin, Daniel W., و Daniel W. Halpin and Leland S. Riggs. Planning and Analysis of Construction Operations. New York: Wiley-Interscience, 1992.
MLA استشهادHalpin, Daniel W., و Daniel W. Halpin and Leland S. Riggs. Planning and Analysis of Construction Operations. New York: Wiley-Interscience, 1992.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.