Kayser-Petersen, M. (2010). Was Tumberchen Erlebt: Mutter, erzähl mir was! : Wartburgverlag.
Citazione stile Chigago Style (17a edizione)Kayser-Petersen, Martha. Was Tumberchen Erlebt: Mutter, Erzähl Mir Was! Jena: : Wartburgverlag, 2010.
Citatione MLA (8a ed.)Kayser-Petersen, Martha. Was Tumberchen Erlebt: Mutter, Erzähl Mir Was! : Wartburgverlag, 2010.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.