Choi, Joon-sik
Her One Media, 2007
Buku Teks
Choi, Joon-sik
Her One Media, 2007
Buku Teks
The Si-sa-yong-o-sa Publishers, 1982
Buku Teks
Osgood, Berrien Cornelius
The Ronald Pres Company, 1951
Buku Teks
Meland, Bernard Eugene
Oxford University Press , 1953
Buku Teks