@book { VonderMotivationstheoriezurMotivationspraxis,
    title = "Von der Motivationstheorie zur Motivationspraxis",
    author = "Julia {Biermeier}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640946679",
    url = "https://www.hausarbeiten.de/document/174271"
}