APA aipamena

Hughes,Ted. (1999). Birthday letters. Faber and Faber.

Chicago Style aipamena

Hughes,Ted. Birthday Letters. London: Faber and Faber, 1999.

MLA aipamena

Hughes,Ted. Birthday Letters. Faber and Faber, 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.