Dyfyniad APA

(1994). Building Maintenance & Preservation. Butterworth Architecture.

Dyfyniad Arddull Chicago

Building Maintenance & Preservation. Butterworth Architecture, 1994.

Dyfyniad MLA

Building Maintenance & Preservation. Butterworth Architecture, 1994.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.