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