《明史·志·卷七》
那些不是历官而懂历法的，除郑世子之外，唐顺之、周述学、陈壤、袁黄、雷宗都有著述。
其非历官而知历者，郑世子而外，唐顺之、周述学、陈壤、袁黄、雷宗皆有著述。
Those who were not astronomers but understood astronomy, in addition to Zheng Shizi, Tang Shunzhi, Zhou Shuxue, Chen Rang, Yuan Huang, and Lei Zong all had their own writings.