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Lodwick, Kathleen L. (May 10, 1868). "The Chinese recorder". Shanghai [etc.] T. Chu [etc.] Archived from the original on May 13, 2016 – via Internet Archive.
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Li, Hanfei (August 2016). "上海居民语言生活及态度研究综述" [A Summary of the Study on Language Life and Attitude of Shanghai Residents]. Study in Language. Changjiang Congkan 长江丛刊 (in Simplified Chinese) (24). Wuhan: 105–106. ISSN2095-7483. Retrieved September 18, 2021.