Vajda, I., & Simai, M. (1971). Foreign trade in a planned economy. University Press.
Cita Chicago (17th ed.)Vajda, Imre, i Mihaly Simai. Foreign Trade in a Planned Economy. Cambridge [Eng.]: University Press, 1971.
Cita MLA (9th ed.)Vajda, Imre, i Mihaly Simai. Foreign Trade in a Planned Economy. University Press, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.