Jo, Hyun-sol, author
Munhak waji sengso, 2003
Buku Referensi
L`Engle, Madeleine
Dell Publishing, 1973
Buku Teks
Rosenboon, Thomas, author
Em Querido's Uitgeverij BV, 2006
Buku Teks
McCarty, Battle
John Wiley & Sons, 1999
Buku Teks
Riplay, Alexandra
Wings Books , 1992
Buku Teks