Cullen, Christopher (1990). «The Science/Technology Interface in Seventeenth-Century China: Song Yingxing 宋 應 星 on "qi" 氣 and the "wu xing" 五 行». Bulletin of the School of Oriental and African Studies, University of London53 (2): 295-318. JSTOR619236. doi:10.1017/S0041977X00026100.
jstor.org
Cullen, Christopher (1990). «The Science/Technology Interface in Seventeenth-Century China: Song Yingxing 宋 應 星 on "qi" 氣 and the "wu xing" 五 行». Bulletin of the School of Oriental and African Studies, University of London53 (2): 295-318. JSTOR619236. doi:10.1017/S0041977X00026100.