Britain), T. R. a. D. A. (. (1979). Timber frame housing: Structural recommendations. Buckinghamshire : TRADA.
Dyfyniad Arddull ChicagoBritain), Timber Research and Development Association (Great. Timber Frame Housing: Structural Recommendations. Buckinghamshire : TRADA, 1979.
Dyfyniad MLABritain), Timber Research and Development Association (Great. Timber Frame Housing: Structural Recommendations. Buckinghamshire : TRADA, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.