Jack, D. T. (1958). Economic survey of Sierra Leone. Govt. Printing Office.
Chicagoスタイル(17版)引用形式Jack, D. T. Economic Survey of Sierra Leone. [Freetown]: Govt. Printing Office, 1958.
MLA(8版)引用形式Jack, D. T. Economic Survey of Sierra Leone. Govt. Printing Office, 1958.
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