History of the Peloponnesian War
Thucydides
Thucydides. Historiae, Vol 1-2. Jones, Henry Stuart, editor. Oxford: Oxford University Press, 1910. (1942 printing).
ὅσσοι δ’ ἐκτὸς Πελοποννάσω τῶν Λακεδαιμονίων ξύμμαχοί ἐντι, ἐν τῷ αὐτῷ ἐσσίονται ἐν τῷπερ καὶ τοὶ Λακεδαιμόνιοι, καὶ τοὶ τῶν Ἀργείων ξύμμαχοι ἐν τ〈ῷ αὐτῷ ἐσσίονται ἐν τῷπερ καὶ τοὶ Ἀργεῖοι〉, τὰν αὐτῶν ἔχοντες.