Dyfyniad APA
Purifoy, R. L., Schexnayder, C. J., & Shapira, A. (2006). Construction planning, equpment, and methods (7th ed.). Tata McGraw Hill.
Dyfyniad Arddull Chicago
Purifoy, Robert. L., Clifford J. Schexnayder, and Aviad Shapira. Construction Planning, Equpment, and Methods. 7th ed. New Delhi: Tata McGraw Hill, 2006.
Dyfyniad MLA
Purifoy, Robert. L., et al. Construction Planning, Equpment, and Methods. 7th ed. Tata McGraw Hill, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.