1F. W. Walbank, A Historical Commentary on Polybius, vol. 1, Oxford : Clarendon Press, 1957, pp. 639 - 640.
2F, W. Walbank, A Historical Commentary on Polybius vol. 1, Oxford : Clarendon Press, 1957, p. 641.
3C. O. Brink ; F. W. Walbank, The Construction of the Sixth Book of Polybius, The Classical Quarterly, New Series, Vol. g, No. 3/4(Jul. - Oct. 1954) ,pp.113 - 114.
4C. O. Brink : F. W. Walbank, The Construction of the Sixth Book Of Polybius, The Classical Quarterly, New Series, Vol,4, No. 3/4 (Jul. - Oct. 1954), p114.
