(1998). Wealth of India: A dictionary of Indian raw materials & industrial products: Raw materials Vol-X: Sp-W (1st.). CSIR.
Dyfyniad Arddull ChicagoWealth of India: A Dictionary of Indian Raw Materials & Industrial Products: Raw Materials Vol-X: Sp-W. 1st. New Delhi: CSIR, 1998.
Dyfyniad MLAWealth of India: A Dictionary of Indian Raw Materials & Industrial Products: Raw Materials Vol-X: Sp-W. 1st. CSIR, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.