ロジカルチームワーク委員会 (in Japanese). Logical Teamwork Committee. Archived from the original on 18 August 2011. Retrieved 7 May 2015.
mlit.go.jp
"Ministry of Land, Infrastructure, Transport and Tourism". mlit.go.jp/common/000125061.pdf. Retrieved 12 May 2011. The award was given to those who made the biggest impact to tourism in Japan. Koichi and Nagasaki has reported an increase in tourism due to Ryomaden effect.
草なぎ剛、仲間由紀恵とのW主演作『橋田賞』受賞に男泣き. Oricon. Retrieved 12 May 2011. Hashida Sugako Award recognised TV Shows that have touched people of Japan or the Japanese Culture