Sen, U. (1992). Customs tariff and administration. Vikas publishing house Pvt. Ltd.
Chicago Edition CitationSen, U.K. Customs Tariff and Administration. New Delhi: Vikas publishing house Pvt. Ltd, 1992.
MLA引文Sen, U.K. Customs Tariff and Administration. Vikas publishing house Pvt. Ltd, 1992.
警告:這些引文格式不一定是100%准確.