Guo, X., & Shum, K. P. (2006). Reduced p.p.-rings without identity. Wiley.
芝加哥风格引文Guo, Xiaojiang, 与 K. P. Shum. Reduced P.p.-rings Without Identity. Wiley, 2006.
MLA引文Guo, Xiaojiang, 与 K. P. Shum. Reduced P.p.-rings Without Identity. Wiley, 2006.
警告：这些引文格式不一定是100％准确.