Não informado. (2009). Proceedings of the Birmingham Natural History Society. Birmingham Natural History and Philosophical Society.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Proceedings of the Birmingham Natural History Society. Birmingham, Inglaterra: Birmingham Natural History and Philosophical Society, 2009.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Proceedings of the Birmingham Natural History Society. Birmingham Natural History and Philosophical Society, 2009.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.