@book { InformalLanguageLearning,
    title = "Informal Language Learning",
    subtitle = "Expanding the English Learning Horizons Beyond the Classroom",
    author = "Marian {Amengual-Pizarro} and Rosa {Alonso Alonso}",
    year = "2024",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b22104",
    url = "https://www.peterlang.com/document/1499496"
}