Não informado. (2009). Proceedings of the Belfast Natural History and Philosophical Society. Belfast Natural History and Philosophical Society.
Lua i Stíl Chicago (17ú heag.)Não informado. Proceedings of the Belfast Natural History and Philosophical Society. Belfast, Irlanda: Belfast Natural History and Philosophical Society, 2009.
Lua MLA (8ú heag.)Não informado. Proceedings of the Belfast Natural History and Philosophical Society. Belfast Natural History and Philosophical Society, 2009.
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