APA (7 वां संस्करण) प्रशस्ति पत्र
(2019). OECD review of higher education, research and innovation: Portugal. OECD Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
OECD Review of Higher Education, Research and Innovation: Portugal. Paris: OECD Publishing, 2019.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
OECD Review of Higher Education, Research and Innovation: Portugal. OECD Publishing, 2019.
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