(1991). Portuguese expansion overseas and the art of ivory. FCG.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPortuguese Expansion Overseas and the Art of Ivory. FCG, 1991.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPortuguese Expansion Overseas and the Art of Ivory. FCG, 1991.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.