Matthews, G. M. A volcano's voice in Shelley: G. M. Matthews. Shelley : a collection of critical essays.(1965).
Lua i Stíl Chicago (17ú heag.)Matthews, G. M. "A Volcano's Voice in Shelley: G. M. Matthews." Shelley : A Collection of Critical Essays.(1965) .
Lua MLA (8ú heag.)Matthews, G. M. "A Volcano's Voice in Shelley: G. M. Matthews." Shelley : A Collection of Critical Essays.(1965), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.