Northeast Asian Linguistic Ecology and the Advent of Rice Agriculture in Korea and Japan 論文 John Whitman ·2011-12-01 ·『Rice』 4(3-4) pp. 149-158 doi:10.1007/s12284-011-9080-0
Linguistics and language policies in North Korea 論文 Chin-Wu Kim ·1978-01-01 ·『Korean studies』 2(1) pp. 159-175 doi:10.1353/ks.1978.0002