Cita APA (7th ed.)

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.