@book{WahrburgEgert2015,
  author    = {Wahrburg, Ursel and Egert, Sarah},
  title     = {Die große Wahrburg/Egert Kalorien- \& N{\"a}hrwerttabelle.},
  edition   = {4. Auflage},
  publisher = {TRIAS},
  address   = {Stuttgart},
  isbn      = {978-3-8304-8329-8},
  year      = {2015},
  language  = {de}
}
@book{BruecknerWahrburg2015,
  author    = {Br{\"u}ckner, Amely and Wahrburg, Ursel},
  title     = {Beraten mit dem Energiedichte-Prinzip - Medienpaket mit Mahlzeitenkarten},
  edition   = {1. Auflage},
  publisher = {aid infodienst},
  address   = {Bonn},
  isbn      = {978-3-8308-1192-3},
  year      = {2015},
  language  = {de}
}