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↑R. M. Ogilvie (1979). ""The Struggle of the Orders."".The Classical Review.29(1): 109–10.{{cite journal}}:AS1-onderhoud: gebruik authors-parameter (link)
↑Killigrew, John W. (1997). "Feature Review".War in History.4(3): 349–53.{{cite journal}}:AS1-onderhoud: gebruik authors-parameter (link)