Kugŏ sunhwa charyojip :
Namhan esŏ sunhwahan mal, Pukhan esŏ tadŭmŭn mal /
Yi Ŭn-jŏng pʻyŏn.
국어순화자료집 : 남한에서순화한말, 북한에서다듬은말
APA Citation
Yi, U., 이은정. (1991). Kugŏ sunhwa charyojip: Namhan esŏ sunhwahan mal, Pukhan esŏ tadŭmŭn mal. Sŏul Tʻŭkpyŏlsi: Kugŏ Munhwasa.
MLA Citation
Yi, Ŭn-jŏng, and 이은정. Kugŏ Sunhwa Charyojip: Namhan Esŏ Sunhwahan Mal, Pukhan Esŏ Tadŭmŭn Mal. Sŏul Tʻŭkpyŏlsi: Kugŏ Munhwasa, 1991.
Warning: These citations may not always be complete (especially for serials).