5: Opuscula adversus Petrum Abaelardum et De fide - Guillaume : de Saint-Thierry, <ca. 1085-1148>. (OLS)http://semarc/name/89163; Verdeyen, Paul, <sj, 1935- >. (OLS)http://semarc/name/89164 (Guillelmi a Sancto Theodorico Opera omnia)
Adversus Petrum Abaelardum
De fide