The article has a reference at the end to The Boneshaker Number 198, Volume 20, Summer 2015 where the research material included in the Wiki article was first published and reviewed .The publication is the Journal of the Veteran-Cycle Club, Britain's leading cycle history club (founded 1955) . The Boneshaker, the club's learned publication is edited and checked by Nigel Land, a cycle historian, and read by the 1500 members who provide comment and corrections to published papers. The shorter Wikipedia article includes relevant updates. The research on Roberts included interviews with the former owner, and son of the founder, Chas Roberts, and several staff members, as well as a literature review of most published work on Roberts Cycles including the interview with Chas Roberts in Made in England (linked from the article), old catalogues, the Classic rendezvous website (linked from the article) and the content of the firm's website (linked from the earlier entry) . The former owner and staff have read the material and any minor corrections they suggested are incorporated in the Wiki entry.
It would, of course, be welcome if Roberts cycle owners and cycle historians were to improve the Wiki entry and provide additional material.
Can you please clarify what further citation you require and how it needs to be referenced?
Please familiarise yourself with Wikipedia's policy WP:No original research. Wikipedia should only contain facts that have already been reported in WP:reliable sources.
There is no objection to your obtaining clarification from other sources where required. However, if you included any facts that were previously unpublished, or are not backed by citations from WP:RS, please remove these from the Wikipedia article. – FayenaticLondon11:45, 9 January 2020 (UTC)[reply]