Sentieri interrotti = Holzwege - Heidegger, Martin, 1889-1976. (OLS)http://ftis/name/51729; Chiodi, Pietro. (OLS)http://ftis/name/63928 (La Nuova Italia,, 1982)

4: Meditationes devotissimae - Guilelmus, abate di Saint-Thierry, 1085-ca.1148. (OLS)http://ftis/name/53062; Verdeyen, Paul. (OLS)http://ftis/name/52985; Poncelet, Albertus. (OLS)http://ftis/name/73630; Ceglar, Stanislaus. (OLS)http://ftis/name/71060 (Guillelmi a Sancto Theodorico Opera omnia, 2005)