Chungso kiŏp kŭlloja pokchi chiwŏn chedo ŭi toip pangan e kwanhan yŏn'gu = Study on the introduction of workers' welfare support system in SMEs - Yi, Chŏng-sŏp (Chungso Kiŏp Yŏn'guwŏn, 2012)
Includes bibliographical references (pages 177-180)