The nine ways of prayer of Saint Dominic - Tugwell, Simon; Wilsden, Sheelagh (Dominican Publications, 1978)
'The author ... is unknown, but it was probably written between 1260 ... and 1288' - Introduction. - '[This translation is based on the Codex Rossianus in "Analecta" O.P.XV (1922), p.93ff. ed. Innocenzio Tauri sano, O.P - Bibliographical note.