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2. Che, Sung-Hye. 2012. The Power Politics of Korean media. In Current Situation of Korean Media, ed. Yuga Suzuki and Sung-Hye Che, 5–26. Tokyo: Iwanami Shoten. (in Japanese).
3. Cheon, Myung-Jae. 2009. Newspapers in South Korea. In Newspaper Studies, ed. Junichi Hamada, Yasuhiko Tajima, and Keiichi Katsura. Tokyo: Nippon Hyoron Sha. (in Japanese).
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5. Consumer Barometer with Google. Trended Data.
https://www.consumerbarometer.com/en/trending/?countryCode=US&category=TRN-NOFILTER-ALL
;
https://www.consumerbarometer.com/en/trending/?countryCode=JP&category=TRN-NOFILTER-ALL
;
https://www.consumerbarometer.com/en/trending/?countryCode=KR&category=TRN-NOFILTER-ALL
;
https://www.consumerbarometer.com/en/trending/?countryCode=TW&category=TRN-NOFILTER-ALL
. Accessed 26 May 2017.