@book { TheValidityoftheCaseStudy,
    title = "The Validity of the Case Study",
    subtitle = "Deviance and Self-Destruction",
    author = "Daniel Leigh {Haytin}",
    year = "1989",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    url = "https://www.peterlang.com/document/1078513"
}