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 London. 53 (2): 295–318. doi:10.1017/S0041977X00026100. JSTOR619236.
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 London. 53 (2): 295–318. doi:10.1017/S0041977X00026100. JSTOR619236.