@book{LinssenLitzcke2008,
  author    = {Linssen, R. and Litzcke, S. M.},
  title     = {Studieren lernen. Arbeits- und Lerntechniken, Pr{\"u}fungen und Studienarbeiten (online verf{\"u}gbar: http://psydok.sulb.uni-saarland.de/volltexte/2008/1551/)},
  edition   = {2., {\"u}berarb. Aufl},
  publisher = {Fachhochschule des Bundes f{\"u}r {\"o}ffentliche Verwaltung},
  address   = {Br{\"u}hl},
  isbn      = {978-3-938407-},
  year      = {2008},
  language  = {de}
}
@book{LinssenMarksMeyer2005,
  author    = {Linssen, R. and Marks, E. and Meyer, A.},
  title     = {Quality in Crime Prevention},
  address   = {Norderstedt},
  isbn      = {3-8334-4194-1},
  pages     = {220 S},
  year      = {2005},
  language  = {de}
}