Barberi, E. M. F. S. a. F. Explosive volcanism. Elsevier.
Lua i Stíl Chicago (17ú heag.)Barberi, Edited Michel F. Sheridan and Franco. Explosive Volcanism. Elsevier.
Lua MLA (8ú heag.)Barberi, Edited Michel F. Sheridan and Franco. Explosive Volcanism. Elsevier.
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