LSJ
= ἐπιορκέω, IG2². 1126 (Decr. Amphict.), 5(1).1390.6 (Andania, i BC), PTeb. 78.17 (ii BC), etc.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
= ἐπιορκέω, Hesych., Inscr.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)