"新流通システム" [Promotion of activities to eliminate gangsters that intervene in the industry] (in Japanese). Toyoukyo.or.jp. Archived from the original on 19 December 2012. Retrieved 24 June 2014.
"新流通システム" [Promotion of activities to eliminate gangsters that intervene in the industry] (in Japanese). Toyoukyo.or.jp. Archived from the original on 19 December 2012. Retrieved 24 June 2014.
Wan, Junmin. (6 November 2014). Consumer casualties : exploring the economics of habit, information, and uncertainty in Japan. New York, NY. ISBN978-1-137-38724-0. OCLC882185031.{{cite book}}: CS1 maint: location missing publisher (link)