@book { StrategischeUmweltanalyseinNonprofitOrganisationen,
    title = "Strategische Umweltanalyse in Nonprofit-Organisationen",
    author = "Anton {Frick}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656023166",
    url = "https://www.hausarbeiten.de/document/179824"
}