Ladd, M. F. C. (1989). Symmetry in molecules and crystals. Ellis Horwood.
Dyfyniad Arddull ChicagoLadd, M. F. C. Symmetry in Molecules and Crystals. Chichester, West Sussex, England: Ellis Horwood, 1989.
Dyfyniad MLALadd, M. F. C. Symmetry in Molecules and Crystals. Ellis Horwood, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.