@book { GermanRealismintheUnitedStates,
    title = "German Realism in the United States",
    author = "Inga E. {Mullen}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    url = "https://www.peterlang.com/document/1078371"
}