@book { ApproachingtheTheaterofAntonioBueroVallejo,
    title = "Approaching the Theater of Antonio Buero Vallejo",
    author = "Eric W. {Pennington}",
    year = "2010",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    url = "https://www.peterlang.com/document/1129544"
}