Kum Song youth publishing House , 1988
Buku Teks
Choe, In Su
Foreign Languages Publishing House, 1985
Buku Teks
Kim, Jong Il, author
Foreign Languages Pub. House, 1996
Buku Teks
Nada, Takashi
Foreign Languages Publishing House, 1984
Buku Teks
Kim, Jong Il, author
Foreign Languages Pub. House, 1995
Buku Teks