Zambernardi, L. (2011). "The Impotence of Power: Morgenthau's Critique of American Intervention in Vietnam". Review of International Studies. 37 (3): 1335–1356. doi:10.1017/S0260210510001531.
Cf. Jack Donnelly, Realism and International Relations (Cambridge Univ. Press, 2000), pp. 11–12, though he prefers the label "biological realist" to "classical realist". For an argument that the differences between classical and structural realists have been exaggerated, see Parent, Joseph M.; Baron, Joshua M. (2011). "Elder Abuse: How the Moderns Mistreat Classical Realism". International Studies Review. 13 (2): 192–213. doi:10.1111/j.1468-2486.2011.01021.x.
