@book { DelapolitesselinguistiqueauCamerounLinguisticpolitenessinCameroon,
    title = "De la politesse linguistique au Cameroun -  Linguistic politeness in Cameroon",
    author = "Bernard {Mulo Farenkia}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1103762"
}