Dyfyniad APA

Central Building Research Institute. Annual report 1956-57. Central Building Research Institute.

Dyfyniad Arddull Chicago

Central Building Research Institute. Annual Report 1956-57. Roorkee: Central Building Research Institute.

Dyfyniad MLA

Central Building Research Institute. Annual Report 1956-57. Central Building Research Institute.

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