APA aipamena

Rost, M. (2005). WorldView 4: Student book. New York: Longman.

Chicago Style aipamena

Rost, Michael. WorldView 4: Student Book. New York: Longman, 2005.

MLA aipamena

Rost, Michael. WorldView 4: Student Book. New York: Longman, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.