Antonino di Piacenza, c2001 p. 95 (b. 270 in the city of Apamia, country unknown; S. Antonino)
OCLC, Dec. 12, 2002 (hdg.: Antoninus, of Apamea, Saint, d. 307 or 8)
Itinerarios latinos a Jerusalén y al Oriente cristiano, 2000 p. 211 (Antonino, martír de Placentia) p. 212 (Antoninus Placentinus)
New Catholic enc. index (Antoninus of Piacenza)
Lexikon für Theologie und Kirche (Antoninus (Antonius) v. Piacenza; martyr; first mentioned in 396 by St. Victricius; authorship of Itinerarium ad loca sancta was wrongly attributed to him)