@incollection{Bontrup2018,
  author    = {Heinz-Josef Bontrup},
  title     = {Personal},
  booktitle = {Pr{\"u}fungstraining f{\"u}r Wirtschaftsstudierende. Grundstudiumsklausuren - Hauptstudiumsklausuren - Musterl{\"o}sungen},
  editor    = {Werner Pepels},
  isbn      = {978-3-482-53241-2},
  year      = {2018},
}