APA aipamena

Flannigan, E. (2010). Grammar friend 6. Oxford University Press.

Chicago Style aipamena

Flannigan, Eileen. Grammar Friend 6. Oxford University Press, 2010.

MLA aipamena

Flannigan, Eileen. Grammar Friend 6. Oxford University Press, 2010.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.