Howard, M. (1983). The causes of wars and other essays (2 ed.). Temple Smith.
Cita Chicago Style (17a ed.)Howard, Michael. The Causes of Wars and Other Essays. 2 ed. London: Temple Smith, 1983.
Cita MLA (9a ed.)Howard, Michael. The Causes of Wars and Other Essays. 2 ed. Temple Smith, 1983.
Precaución: Estas citas no son 100% exactas.