Codex juris canonici Pii X Pontificis Maximi jussu digestus Benedicti Papae XV auctoritate promulgatus - Benedictus XV, pope, 1854-1922; Pius X, pope, 1835-1914; Gasparri, Pietro, 1852-1934 (Romae : Typis polyglottis Vaticanis, 1917)