Lee, C. H. (1998). A study of Yang Yan and his two-tax system.
Chicago Style (17th ed.) CitationLee, Chee Hiang. A Study of Yang Yan and His Two-tax System. 1998.
MLA引文Lee, Chee Hiang. A Study of Yang Yan and His Two-tax System. 1998.
警告：这些引文格式不一定是100％准确.