@book { SustainabilityandUniversityLife,
    title = "Sustainability and University Life",
    subtitle = "Second, revised edition",
    author = "Walter {Leal Filho}",
    year = "2000",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1144001"
}