@book { ThinkingGeometrically,
    title = "Thinking Geometrically",
    author = "John T. {Waisanen} and Jennifer Daryl {Slack}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    url = "https://www.peterlang.com/document/1094490"
}