@book { Auswendiglernenundspielen, title = "Auswendig lernen und spielen", author = "Wendelin {Bitzan}", year = "2010", publisher = "Peter Lang Verlag", address = "Berlin, Germany", doi = "10.3726/978-3-653-00296-6", url = "https://www.peterlang.com/document/1044291" }