(1974). Bricks: Their properties and use. Construction Press.
Dyfyniad Arddull ChicagoBricks: Their Properties and Use. Lancaster: Construction Press, 1974.
Dyfyniad MLABricks: Their Properties and Use. Construction Press, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.