Ingram, J. C. (1970). International economic problem (2nd ed.). John Wiley.
Chicago Style (17th ed.) ZitazioaIngram, James C. International Economic Problem. 2nd ed. NewYork: John Wiley, 1970.
MLA (9th ed.) ZitazioaIngram, James C. International Economic Problem. 2nd ed. John Wiley, 1970.
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