Utton, M. A., & Morgan, A. D. (1983). Concentration and foreign trade. Cambridge University Press.
Cita Chicago (17th ed.)Utton, M. A., i Ann D. Morgan. Concentration and Foreign Trade. Cambridge: Cambridge University Press, 1983.
Cita MLA (9th ed.)Utton, M. A., i Ann D. Morgan. Concentration and Foreign Trade. Cambridge University Press, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.