Cookson, C. (1982). Pure as the lily = Das einsame Glück <engl.>: Catherine Cookson. Corgi Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCookson, Catherine. Pure as the Lily = Das Einsame Glück <engl.>: Catherine Cookson. London: Corgi Books, 1982.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCookson, Catherine. Pure as the Lily = Das Einsame Glück <engl.>: Catherine Cookson. Corgi Books, 1982.
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