@book { DiealternativeSprachlehrmethodeTPRSTeachingProficiencythroughReadingandStorytelling,
    title = "Die alternative Sprachlehrmethode TPRS (Teaching Proficiency through Reading and Storytelling)",
    author = "Natalie {Hollenstein}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b11763",
    url = "https://www.peterlang.com/document/1055750"
}