Wulff, A. (2020). Grading Goal Four: Tensions, Threats, and Opportunities in the Sustainable Development Goal on Quality Education. Brill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWulff, Antonia. Grading Goal Four: Tensions, Threats, and Opportunities in the Sustainable Development Goal on Quality Education. Brill, 2020.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWulff, Antonia. Grading Goal Four: Tensions, Threats, and Opportunities in the Sustainable Development Goal on Quality Education. Brill, 2020.
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