Brockhaus-1809: Doctor Johann Faust · Doctor Grahams himmlisches Bette · Doctor Benjamin Franklin
Brockhaus-1911: Utriusque juris doctor · Juris utriusque doctor · Doctor
Herder-1854: Doctor · Bullatus doctor
Meyers-1905: Urĭusque juris doctor · Juris utrĭusque doctor · Doctor [2]
Pierer-1857: Juris utrĭusque Doctor · Utriusque juris doctor · Bologneser Doctor · Doctor