Não informado. (2009). Proceedings of the Belfast Natural History and Philosophical Society. Belfast Natural History and Philosophical Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Proceedings of the Belfast Natural History and Philosophical Society. Belfast, Irlanda: Belfast Natural History and Philosophical Society, 2009.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Proceedings of the Belfast Natural History and Philosophical Society. Belfast Natural History and Philosophical Society, 2009.
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