Não informado. (2009). Proceedings of the Birmingham Natural History and Philosophical Society. Birmingham Natural History and Philosophical Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Proceedings of the Birmingham Natural History and Philosophical Society. Birmingham, Inglaterra: Birmingham Natural History and Philosophical Society, 2009.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Proceedings of the Birmingham Natural History and Philosophical Society. Birmingham Natural History and Philosophical Society, 2009.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.