@book { DasAusdauertrainingberblickberAusdauertypenundTrainingsmethoden,
    title = "Das Ausdauertraining. Überblick über Ausdauertypen und Trainingsmethoden",
    author = "Kira {Fetter}",
    year = "2015",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/303930"
}