Kaplan, A. (2015). A HIGHLY IMPROBABLE DATA POINT. Journal of Chinese Linguistics, 43(2), 710-713. https://www.airitilibrary.com/Article/Detail?DocID=P20181204001-201506-201812060011-201812060011-710-713
羅天佑(2012)。A Study on Entrapment〔碩士論文,國立臺北大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0023-1307201213074900
Han, M. J. (2013). A sharp observation of fundamental group [master's thesis, National Tsing Hua University]. Airiti Library. https://doi.org/10.6843/NTHU.2013.00201