Bibliothèque nationale de France WWW auth. file, Feb. 13, 2012 (hdg.: Errandonea, Ignacio, 1886-1970; b. Aug. 2, 1886, Vera de Bidasoa; d. Oct. 18, 1970, San Sebastián; Jesuit; Hellenist)
Dicc. biog. español contemp., 1970 (Errandonea y Goicoechea, Ignacio (1886); writer, Jesuit priest, b. 8/2/1886 Vera de Bidasoa, Navarre; specialist on Sophocles; lists works)
Sophocles. Tragedias, 1984- v. 1, t.p. (Ignacio Errandonea, S.I., B. Litt., Oxford)