Vos. Kongo in the Age of Empire, 1860–1913. University of Wisconsin Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVos. Kongo in the Age of Empire, 1860–1913. University of Wisconsin Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVos. Kongo in the Age of Empire, 1860–1913. University of Wisconsin Press.
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