Cita APA (7th ed.)
ebrary, Inc, Fehige, C., & Wessels, U. (1998). Preferences. W. de Gruyter.
Cita Chicago (17th ed.)
ebrary, Inc, Christoph Fehige, i Ulla Wessels. Preferences. Berlin ; New York: W. de Gruyter, 1998.
Cita MLA (9th ed.)
ebrary, Inc, et al. Preferences. W. de Gruyter, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.