@book{Laack2011,
  author    = {Laack, Walter van},
  title     = {Wer stirbt, ist nicht tot! 2. Aufl.},
  publisher = {van Laack},
  address   = {Aachen},
  isbn      = {978-3-936624-13-7},
  pages     = {272 S.},
  year      = {2011},
  language  = {de}
}
@book{WackerKurz2011,
  author    = {Wacker, Sidonie and Kurz, Melanie},
  title     = {K{\"o}rper, Fl{\"a}chen, Schnitte : Bildlexikon f{\"u}r Gestalter},
  publisher = {av-edition},
  address   = {Ludwigsburg},
  isbn      = {978-3-89986-162-4},
  pages     = {180 S. : zahlr. Ill},
  year      = {2011},
  language  = {de}
}