Cita APA (7th ed.)
ebrary, Inc, Breivik, L. E., & Jahr, E. H. (1989). Language change: Contributions to the study of its causes. Mouton de Gruyter.
Cita Chicago (17th ed.)
ebrary, Inc, Leiv Egil Breivik, i Ernst Håkon Jahr. Language Change: Contributions to the Study of Its Causes. Berlin ; New York: Mouton de Gruyter, 1989.
Cita MLA (9th ed.)
ebrary, Inc, et al. Language Change: Contributions to the Study of Its Causes. Mouton de Gruyter, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.