ROBLES-PUENTE, Sergio; VILCHES AGUADO, Jesús. Bilabial fricatives in Mexican Spanish: A sociophonetic analysis. Borealis – An International Journal of Hispanic Linguistics, Tromsø, Norway, v. 8, n. 1, p. 143–161, 2019. DOI: 10.7557/1.8.1.4561. Disponível em: https://septentrio.uit.no/index.php/borealis/article/view/4561. Acesso em: 21 apr. 2026.