Clough, R. H. a. . S. (1979). Construction project management (2 Edition.).
Dyfyniad Arddull ChicagoClough, Richard H and Sears. Construction Project Management. 2 Edition. John Wiley & Sons Inc., New York, 1979.
Dyfyniad MLAClough, Richard H and Sears. Construction Project Management. 2 Edition. 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.