United Nations. Economic and Social Council. Statistical Commission. (1957). A system of piece and quantity indexes for national accounts. [s.n.].
Cita Chicago Style (17a ed.)United Nations. Economic and Social Council. Statistical Commission. A System of Piece and Quantity Indexes for National Accounts. New York: [s.n.], 1957.
Cita MLA (9a ed.)United Nations. Economic and Social Council. Statistical Commission. A System of Piece and Quantity Indexes for National Accounts. [s.n.], 1957.
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