Migne, Jacques-Paul. 1844. Tertulliani. Liber de oration. Caput. XXV.  . Patrologiae latinae. Vol. Series prima. (Patrologiae Latinae). Paris. https://books.google.bg/books?id=tb4UAAAAQAAJ&printsec=frontcover&hl=bg&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false.