Johnson, W. A. (1966). The steel industry of India. Cambridge: Harvard University Press.
Dyfyniad Arddull ChicagoJohnson, William A. The Steel Industry of India. Cambridge: Harvard University Press, 1966.
Dyfyniad MLAJohnson, William A. The Steel Industry of India. Cambridge: Harvard University Press, 1966.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.