Rhet gre 1399a19-21(19) ἄλλος, ὅταν περὶ δυοῖν καὶ ἀντικειμένοιν ἢ προτρέπειν (20) ἢ ἀποτρέπειν δέῃ, [καὶ] τῷ πρότερον εἰρημένῳ τρόπῳ ἐπ’ (21) ἀμφοῖν χρῆσθαι.
Rhys Roberts 1924 engThe Art of Rhetoric of Callippus is made up of this line of argument, with the addition of those of Possibility and the others of that kind already described.
http://www2.hf.uio.no/common/apps/permlink/permlink.php?app=polyglotta&context=record&uid=cff45a82-1d51-11e7-ba66-0050569f23b2
