Pakistan. Ministry of Commerce & Pakistan. Central Board of Revenue. (1979). Pakistan customs tariff. Manager of Publications.
Chicago-viite (17. p.)Pakistan. Ministry of Commerce ja Pakistan. Central Board of Revenue. Pakistan Customs Tariff. Karachi: Manager of Publications, 1979.
MLA-viite (8. p.)Pakistan. Ministry of Commerce ja Pakistan. Central Board of Revenue. Pakistan Customs Tariff. Manager of Publications, 1979.
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