@book { ContentandForeignLanguageIntegratedLearning,
    title = "Content and Foreign Language Integrated Learning",
    author = "Yolanda {Ruiz de Zarobe} and Juan Manuel {Sierra} and Francisco {Gallardo del Puerto}",
    year = "2011",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    doi = "10.3726/978-3-0351-0171-3",
    url = "https://www.peterlang.com/document/1051918"
}