Hang-u Yi

• Chŏngbo sahoe ŭi ihae
• Chŏngdong chabonjuŭi wa chayu nodong ŭi posang
• K'ŭllik ŭi sahoehak
• Posu ŭi inyŏm kwaing, chinbo ŭi chŏngch'i pin'gon