U, H., Cho, W., & Pak, S. (2007). Swipke paeunŭn Hanʼgugŏ = Easy learning Korean = 쉽게 배우는 한국어. LanguagePLUS.
Dyfyniad Arddull ChicagoU, Hyŏng-sik, Wi-su Cho, and Sŏng-gyŏng Pak. Swipke Paeunŭn Hanʼgugŏ = Easy Learning Korean = 쉽게 배우는 한국어. Sŏul: LanguagePLUS, 2007.
Dyfyniad MLAU, Hyŏng-sik, et al. Swipke Paeunŭn Hanʼgugŏ = Easy Learning Korean = 쉽게 배우는 한국어. LanguagePLUS, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.