@book { OriginofNewYorkCitysNicknameTheBigApple,
    title = "Origin of New York City’s Nickname «The Big Apple»",
    author = "Gerald L. {Cohen} and Barry A. {Popik}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1108691"
}