@book { IndividuellerTrainingsplanfrdasAusdauertraining,
    title = "Individueller Trainingsplan für das Ausdauertraining",
    author = "Edelgard {Kaczmarek}",
    year = "2014",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/286679"
}