History of the Peloponnesian War
Thucydides
Thucydides. Historiae, Vol 1-2. Jones, Henry Stuart, editor. Oxford: Oxford University Press, 1910. (1942 printing).
τοῦ δ’ αὐτοῦ θέρους καὶ Θυσσὸν τὴν ἐν τῇ Ἄθω Ἀκτῇ Διῆς εἷλον, Ἀθηναίων οὖσαν ξύμμαχον.
καὶ τὸ θέρος τοῦτο πᾶν ἐπιμειξίαι μὲν ἦσαν τοῖς Ἀθηναίοις καὶ Πελοποννησίοις, ὑπώπτευον δὲ ἀλλήλους εὐθὺς μετὰ τὰς σπονδὰς οἵ τε Ἀθηναῖοι καὶ οἱ Λακεδαιμόνιοι κατὰ τὴν τῶν χωρίων ἀλλήλοις οὐκ ἀπόδοσιν.