KIRK, S. J. (1995). Life Cycle Costing For Design Professionals Stephen J. Kirk, Alphonse J. Dell Sola. McGraw-Hill.
Dyfyniad Arddull ChicagoKIRK, Stephen J. Life Cycle Costing For Design Professionals Stephen J. Kirk, Alphonse J. Dell Sola. McGraw-Hill, 1995.
Dyfyniad MLAKIRK, Stephen J. Life Cycle Costing For Design Professionals Stephen J. Kirk, Alphonse J. Dell Sola. McGraw-Hill, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.