Jain R.K. (2009). ITC(HS) classification of export and import items(with CustomsTariff Rates and exemptions)/14e (14th ed.). Centax.
Trích dẫn kiểu ChicagoJain R.K. ITC(HS) Classification of Export and Import Items(with CustomsTariff Rates and Exemptions)/14e. 14th ed. Centax, 2009.
Trích dẫn MLAJain R.K. ITC(HS) Classification of Export and Import Items(with CustomsTariff Rates and Exemptions)/14e. 14th ed. Centax, 2009.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.