Imazaki, Yasuo. 会社概要 - 社長あいさつ [Company Profile - Message from the President]. Midori-kai (in Japanese). Archived from the original on 15 March 2014. Retrieved 22 April 2014.
Imazaki, Yasuo. 会社概要 - 社長あいさつ [Company Profile - Message from the President]. Midori-kai (in Japanese). Archived from the original on 15 March 2014. Retrieved 22 April 2014.