@book { DasThemaGrostadtimExpressionismusUntersuchtanvierGedichten,
    title = "Das Thema Großstadt im Expressionismus. Untersucht an vier Gedichten",
    author = "Angelina {Kalden}",
    year = "2008",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640220885",
    url = "https://www.hausarbeiten.de/document/118696"
}