Uribe Villegas, Óscar 1968. Xème Congres International de Linguistes (Xth International Congress of Linguists). Résumés des Communications (Abstracts of Papers). Revista Mexicana de Sociologí­a. 30, 2 (abr. 1968), 471–473. DOI:https://doi.org/10.22201/iis.01882503p.1968.2.58358.