Pryor, F. L. (1963). The Communist foreign trade system. London: M.I.T. Press.
Trích dẫn kiểu ChicagoPryor, Frederic L. The Communist Foreign Trade System. London: M.I.T. Press, 1963.
Deismireacht MLAPryor, Frederic L. The Communist Foreign Trade System. London: M.I.T. Press, 1963.
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