APA (7 वां संस्करण) प्रशस्ति पत्र

Não informado. (2020). Research Reports. Smithsonian Institution, Office of Public Affairs.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Não informado. Research Reports. Washington: Smithsonian Institution, Office of Public Affairs, 2020.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Não informado. Research Reports. Smithsonian Institution, Office of Public Affairs, 2020.

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