Não informado. (2020). Research on the Past Climate and Continental Drift. Ding Ying H. Ma and Li Youying.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Research on the Past Climate and Continental Drift. Taipei: Ding Ying H. Ma and Li Youying, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Research on the Past Climate and Continental Drift. Ding Ying H. Ma and Li Youying, 2020.
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