@book { NutzerorientierteEvaluationvonOnlineLernen,
    title = "Nutzerorientierte Evaluation von Online-Lernen",
    author = "Michaela {Reißfelder-Zessin}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1095075"
}