Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus
 
    
Subject: Canon Law
Author of work: Gratianus
Title: Decretum Gratiani
 
    
Subject: Theology
Author of work: Thomas Aquinas
Title: Summa theologiae
 
    
Subject: Civil Law
Author of work: Justinianus
Title: Digestum novum