Jenkin. (2009). William and Lawrence Bragg, father and son. OUP.
Dyfyniad Arddull ChicagoJenkin. William and Lawrence Bragg, Father and Son. OUP, 2009.
Dyfyniad MLAJenkin. William and Lawrence Bragg, Father and Son. OUP, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.