O, S., Kang, I., Pak, H., Kim, Y., & Chang, S. (2015). Taehan Min'guk kyoyuk 70 nyŏn. Taehan Min'guk Yŏksa Pangmulgwan.
Chicago Style (17th ed.) CitationO, Sŏng-ch'ŏl, Il-guk Kang, Hwan-bo Pak, Yŏng-hwa Kim, and Sang-su Chang. Taehan Min'guk Kyoyuk 70 Nyŏn. Sŏul: Taehan Min'guk Yŏksa Pangmulgwan, 2015.
MLA (9th ed.) CitationO, Sŏng-ch'ŏl, et al. Taehan Min'guk Kyoyuk 70 Nyŏn. Taehan Min'guk Yŏksa Pangmulgwan, 2015.
Warning: These citations may not always be 100% accurate.