Kim, Jong Il, author
Foreign Languages Pub. House, 1982
Buku Teks
Martin Brinkworth
Springer, 2012
eBooks
Fatih University Publications, 2009
Buku Referensi
Kudeok Publishing Company, 2006
Buku Referensi
edited by Alphonse F. Trezza
G.K. Hall, 1990
Buku Teks