"(Qing) Xu Jingcheng". Taipei, Taiwan: Institute of History and Philology (IHP) of Academia Sinica. Archived from the original on 22 December 2012. Retrieved 30 March 2013.
"資料連結". archive.ihp.sinica.edu.tw. Archived from the original on 22 December 2012. Retrieved 3 February 2022.
"(Qing) Xu Jingcheng". Taipei, Taiwan: Institute of History and Philology (IHP) of Academia Sinica. Archived from the original on 22 December 2012. Retrieved 30 March 2013.
"資料連結". archive.ihp.sinica.edu.tw. Archived from the original on 22 December 2012. Retrieved 3 February 2022.