Encyclopedia of psychology and religion : volume 2
edited by David A. Leeming, Kathryn Madden, Stanton Marlan
Springer, 2009
 Buku Referensi
Thought and religion
The Korea Foundation.
The Korean Foundation, 1994
 Buku Referensi
Korean thought
edited by International Cultural Foundation ; general editor, Chun Shin-yong
Si-sa-yong-o-sa , 1982
 Buku Teks SO
The Cultural library : volume 2, the marvels of nature
Parents' Magazine's Cultural Institute, 1965
 Buku Referensi
Needham, Joseph
Science and civilization in China; Volume 2: history of scientific thought
Cambridge University Press, 1956
 Buku Teks SO