1. De Weerdt, Hilde, Ho, Hou Ieong Brent. (2014). MARKUS. Text Analysis and Reading Platform. http://dh.chinese-empires.eu/beta/. Funded by the European Research Council and the Digging into Data Challenge. The Korean version of MARKUS, developed by De Weerdt, Gelein, Ho, Hu Jing, Kim Hyeon, and Kim Baro, funded by Asian Modernities and Traditions (AMT), Leiden University.
2. Hsiang, Jieh, Tu, Hsieh-Chang, et al. (n.d.). DocuSky; the National Taiwan University Research Centre for Digital Humanities: https://docusky.org.tw/DocuSky/home/.
3. Chang, Tsun-wu. (1978). Qing Han zong fan mao yi 1637–1894 [Sino-Korean tributary trade: 1637–1894]. Institute of Modern History, Academia Sinica.
4. Crossley, P. K. (1997). Review of Cherishing Men From Afar: Qing Guest Ritual and The Macartney Embassy of 1793. Harvard Journal of Asiatic Studies, 57(2), 597–611.
5. Weerdt, De., Hilde, X.-L., & Jialong, L. (2020). Rethinking Space and Power in East Asia: Digital Approaches to the History of Infrastructure. Ming Studies., 2020(81), 76–87. https://doi.org/10.1080/0147037X.2020.1736862