APA (7th ed.) Zitazioa

Kroll, B. (1990). Second language writing: Research insights for the classroom (1a. ed.). Cambridge University.

Chicago Style (17th ed.) Zitazioa

Kroll, Barbara. Second Language Writing: Research Insights for the Classroom. 1a. ed. Cambridge: Cambridge University, 1990.

MLA (9th ed.) Zitazioa

Kroll, Barbara. Second Language Writing: Research Insights for the Classroom. 1a. ed. Cambridge University, 1990.