Williams, G. L., & Williams, A. L. (1982). Crisis in European defence: The next ten years. St. Martin's Press.
Cita Chicago (17th ed.)Williams, Geoffrey Lee, i Alan Lee Williams. Crisis in European Defence: The Next Ten Years. London: St. Martin's Press, 1982.
Cita MLA (9th ed.)Williams, Geoffrey Lee, i Alan Lee Williams. Crisis in European Defence: The Next Ten Years. St. Martin's Press, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.