Clarke, M. L. (1981): . Ithaca, NY: Cornell University Press. Heitland, W. E. (1909): . Cambridge: Cambridge University Press. Plutarch (1910): . redigert av Arthur H. Clough. London: Dutton. Syme, Ronald (1939): . Oxford: Oxford University Press. Wistrand, Erik (1981): . Goteborg, Sweden: Kungl.