Yoon, J. (1974). A study on rural population. [s.n.].
芝加哥风格引文Yoon, Jong-Joo. A Study on Rural Population. Seoul: [s.n.], 1974.
MLA引文Yoon, Jong-Joo. A Study on Rural Population. [s.n.], 1974.
警告：这些引文格式不一定是100％准确.
APA引文
Yoon, J. (1974). A study on rural population. [s.n.].
芝加哥风格引文Yoon, Jong-Joo. A Study on Rural Population. Seoul: [s.n.], 1974.
MLA引文Yoon, Jong-Joo. A Study on Rural Population. [s.n.], 1974.