Crowley, R. (2015). Conquerors: How Portugal forged the first global empire (First edition.). Random House.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCrowley, Roger. Conquerors: How Portugal Forged the First Global Empire. First edition. New York: Random House, 2015.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCrowley, Roger. Conquerors: How Portugal Forged the First Global Empire. First edition. Random House, 2015.
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