Sy, D. (2019). A natural history of empire. Bughaw, an imprint of Ateneo de Manila University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSy, Dominic. A Natural History of Empire. Quezon City: Bughaw, an imprint of Ateneo de Manila University Press, 2019.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSy, Dominic. A Natural History of Empire. Bughaw, an imprint of Ateneo de Manila University Press, 2019.
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