Deismireacht APA

Derek O'Brien. (2009). Penguin Year Book 2009. Penguin books.

Chicago Edition Citation

Derek O'Brien. Penguin Year Book 2009. New Delhi: Penguin books, 2009.

Deismireacht MLA

Derek O'Brien. Penguin Year Book 2009. Penguin books, 2009.

Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.