Pakistan. Ministry of Commerce, Trade agreement between the Government of Pakistan and the United Kingdom Government, Karachi, 2 April 1951. Karachi, 1951
India. Department of Statistics, Return showing the imports into British India in the first year of the war... and the gross amount of import duty collected. Calcutta, 1915
East India Company, Despatch from the Court of Directors of the East India Company to the Governor in Council in Council at Bombay, dated 4 June (No.8) 1856, Revenue Department [trade of Karachi with Central Asia]. London, 1856