Theodorus Petreius  <br />Hermannus Appeldorn, monachus Cartusiae Coloniensis,  in: Theodorus Petreius, Bibliotheca Cartusiana sive illustrium Sacri Cartusiensis Ordinis scriptorum catalogus, Coloniae  [Köln], Antonius Hieratus, 1609, 141-142  <br />[Petreius 1609ii]