Hartiradh Singh. (1989). Foreign Trade review. Indian Institute of Foreign trade.
Dyfyniad Arddull ChicagoHartiradh Singh. Foreign Trade Review. Delhi: Indian Institute of Foreign trade, 1989.
Dyfyniad MLAHartiradh Singh. Foreign Trade Review. Indian Institute of Foreign trade, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.