"I ch'aek ŭn 2006-yŏn e ch'ulp'anhan Sŏgang Han'gugŏ 4A rŭl sujŏng powan han kŏt imnida"--Colophon.
Includes supplemental audio CD-ROMs and supplement to Student's book (Munpŏp tanŏ ch'amgosŏ).
4A. Student's book -- 4A. Student's book supplement (Munpŏp tanŏ ch'amgosŏ) -- 4A. Work book -- 4B. Student's book -- 4B. Student's book supplement (Munpŏp tanŏ ch'amgosŏ) -- 4B. Work book