APA (7th ed.) Zitazioa

ebrary, Inc, Coulmas, F., & Ehlich, K. (1983). Writing in focus. Mouton.

Chicago Style (17th ed.) Zitazioa

ebrary, Inc, Florian Coulmas, eta Konrad Ehlich. Writing in Focus. Berlin ; New York: Mouton, 1983.

MLA (9th ed.) Zitazioa

ebrary, Inc, et al. Writing in Focus. Mouton, 1983.