@book { Travailformationettransactionssociales,
    title = "Travail, formation et transactions sociales",
    author = "Jean-Yves {Causer} and Philippe {Hamman}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    url = "https://www.peterlang.com/document/1107521"
}