Whitman, John (2011-12-01). «Northeast Asian Linguistic Ecology and the Advent of Rice Agriculture in Korea and Japan» (στα αγγλικά). Rice4 (3): 149–158. doi:10.1007/s12284-011-9080-0. ISSN1939-8433.
Whitman, John (2011-12-01). «Northeast Asian Linguistic Ecology and the Advent of Rice Agriculture in Korea and Japan» (στα αγγλικά). Rice4 (3): 149–158. doi:10.1007/s12284-011-9080-0. ISSN1939-8433.