De Soyza, T. (1985). The economic and marketing environment in the rice and subsidiary food crops sector. s.n.].
Chicagoスタイル(17版)引用形式De Soyza, Tissa. The Economic and Marketing Environment in the Rice and Subsidiary Food Crops Sector. [Colombo?: s.n.], 1985.
MLA(8版)引用形式De Soyza, Tissa. The Economic and Marketing Environment in the Rice and Subsidiary Food Crops Sector. s.n.], 1985.
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