Cita APA

Northedge , F., & By Grieve , M. J. (1971). A hundred years of international relations. Duckworth.

Citación estilo Chicago

Northedge , F.S, and M. J. By Grieve. A Hundred Years of International Relations. London: Duckworth, 1971.

Cita MLA

Northedge , F.S, and M. J. By Grieve. A Hundred Years of International Relations. Duckworth, 1971.