1. The understanding of Korea ginseng;Ko,2005
2. An introduction of Korean ginseng: the elixir of life;Korea Ginseng & Tobacco Research Institute,1983
3. Hong MS (洪萬選). Sanrimgyeongje (山林經濟). Korea; 16–17th century.
4. Anonymous chronicler. The veritable record of the Joseon dynasty (朝鮮王朝實錄). Korea; 1776–.
5. Discussion of ginseng properties through a historical research of Korean ginseng;Ko;Korean J Herbol,2009