@book { Empiricalstudiesinmultilingualism,
    title = "Empirical studies in multilingualism",
    author = "Ana Cristina {Lahuerta Martínez} and Antonio José {Jiménez Muñoz}",
    year = "2019",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    doi = "10.3726/b15231",
    url = "https://www.peterlang.com/document/1057187"
}