Harnetty, P. (1972). Imperialism and free trade: Lancashire and India in the mid-nineteenth century. Manchester University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHarnetty, Peter. Imperialism and Free Trade: Lancashire and India in the Mid-nineteenth Century. Manchester University Press, 1972.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHarnetty, Peter. Imperialism and Free Trade: Lancashire and India in the Mid-nineteenth Century. Manchester University Press, 1972.
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