by Lee Sam Hyong ... [and others]
Joongang kyoyook jin heung yeongooso, 2003
Buku Teks
Lee, Ki-mun, author
Seoul Doosan Dong a, 2003
Buku Referensi
Nam, Gi-sim, author
Thaehaksa, 2010
Buku Teks
Lee, Jin-ho, author
Pagijong Press, 2009
Buku Teks
Nam, Ki-sim, author
Topchulpansa, 2010
Buku Teks