@book { PugnaporInfluenciayHegemona,
    title = "Pugna por Influencia y Hegemonía",
    subtitle = "La rivalidad germano-estadounidense en Bolivia 1936-1946",
    author = "León E. {Bieber}",
    year = "2004",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097958"
}