(1930). Mc Graw-hill modern scientists and engineers. McGraw-Hill.
Dyfyniad Arddull ChicagoMc Graw-hill Modern Scientists and Engineers. NewYork: McGraw-Hill, 1930.
Dyfyniad MLAMc Graw-hill Modern Scientists and Engineers. McGraw-Hill, 1930.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.