Lancashire and Cheshire Fauna Society. Publication. Lancashire and Cheshire Fauna Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLancashire and Cheshire Fauna Society. Publication. Manchester: Lancashire and Cheshire Fauna Society.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLancashire and Cheshire Fauna Society. Publication. Lancashire and Cheshire Fauna Society.
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