Roberts, P. (2000). How poetry works (2nd ed.). Penguin Books.
Lua i Stíl Chicago (17ú heag.)Roberts, Philip. How Poetry Works. 2nd ed. Harmondsworth, Middlesex, England ; New York, New York, U.S.A.: Penguin Books, 2000.
Lua MLA (8ú heag.)Roberts, Philip. How Poetry Works. 2nd ed. Penguin Books, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.