1 2 Burn, A. R. (1968). The lyric age of Greece. St. Martin's Press: Minerva. tr. 314–318.
↑ Carl Sagan, Vũ trụ: Sự tiến hóa của vũ trụ, sự sống và nền văn minh, Nguyễn Việt Long dịch, Nhã Nam; Nhà xuất bản Thế giới, 2011, tr. 297.
↑ Bury, J. B.; Mieggs, Russell (1956). A history of Greece to the death of Alexander the Great (ấn bản 3). London: Macmillan. tr. 232–234.
↑ Walter Burkert, 'Kynaithos, Polycrates and the Homeric Hymn to Apollo' in Arktouros: Hellenic studies presented to B. M. W. Knox ed. G. W. Bowersock, W. Burkert, M. C. J. Putnam (Berlin: De Gruyter, 1979), pp. 53–62.
↑ See papyrus fragment of a poem by Ibycus that mentions Polycrates at Oxyrhynchus Online: ‘With them you too, Polycrates, shall have immortal fame for beauty as long as my song and fame endure.’
