Slack, E. R. (1970). The effect of the U. S. international telecommunications industry on the United States balance of payments. London: University Microfilms International.
シカゴスタイル引用形Slack, Edward Robert. The Effect of the U. S. International Telecommunications Industry On the United States Balance of Payments. London: University Microfilms International, 1970.
MLA引用形式Slack, Edward Robert. The Effect of the U. S. International Telecommunications Industry On the United States Balance of Payments. London: University Microfilms International, 1970.
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