Analysis of information sources in references of the Wikipedia article "特威德法院大楼" in Chinese language version.
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值 (帮助) (PDF). National Park Service. 1975-12 [2011-12-06]. (原始内容存档 (PDF)于2012-04-06).|url=
值 (帮助) (PDF). National Park Service. 1975-12 [2011-12-06]. (原始内容存档 (PDF)于2012-04-06).|url=
值 (帮助) (PDF). National Park Service. 1975-12 [2011-12-06]. (原始内容存档 (PDF)于2012-04-06).|url=
值 (帮助) (PDF). National Park Service. 1975-12 [2011-12-06]. (原始内容存档 (PDF)于2012-04-06).