@book { AStudyofLiberationDiscourse,
    title = "A Study of Liberation Discourse",
    subtitle = "The Semantics of Opposition in Freire and Gutierrez",
    author = "Roberto {Rivera}",
    year = "2004",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    url = "https://www.peterlang.com/document/1098475"
}