Dyfyniad APA
ebrary, Inc, & Bull, J. W. (1993). Life cycle costing for construction. Blackie Academic & Professional.
Dyfyniad Arddull Chicago
ebrary, Inc, and John W. Bull. Life Cycle Costing for Construction. London: Blackie Academic & Professional, 1993.
Dyfyniad MLA
ebrary, Inc, and John W. Bull. Life Cycle Costing for Construction. Blackie Academic & Professional, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.