Yi, K. (1987). Sajin ŭro ponŭn tongnip undong (Chʿopʿan.). Sŏmundang.
Chicago Style (17th ed.) CitationYi, Kyu-hŏn. Sajin ŭro Ponŭn Tongnip Undong. Chʿopʿan. Sŏul: Sŏmundang, 1987.
MLA (8th ed.) CitationYi, Kyu-hŏn. Sajin ŭro Ponŭn Tongnip Undong. Chʿopʿan. Sŏmundang, 1987.
Warning: These citations may not always be 100% accurate.