Ward, L. (2022). The Empress and the English doctor: How Catherine the Great defied a deadly virus. Oneworld Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWard, Lucy. The Empress and the English Doctor: How Catherine the Great Defied a Deadly Virus. London: Oneworld Publications, 2022.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWard, Lucy. The Empress and the English Doctor: How Catherine the Great Defied a Deadly Virus. Oneworld Publications, 2022.
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