Wikipedia
RefME
RefME is a free citation management tool available on web, iOS and Android. It offers a functionality that allows users to scan book and journal barcodes with a mobile device and generate citations automatically. It is compatible with other citation management tools such as Mendeley, Zotero, RefWorks and EndNote and enables exporting in over 7000 citation styles. In May 2015 the company released a Chrome plug-in to allow for direct clipping of web sources, which was followed in August 2015 by a similar iOS extension.