Opportunities for Data Exchange (ODE) is a FP7 Project carried out by members of the Alliance for Permanent Access (APA), which is gathering evidence to support strategic investment in the emerging e-Infrastructure for data sharing, re-use and preservation. With the ever increasing availability of data, the best way to ensure its sharing and re-use is becoming a prominent issue. Finding data and understanding data are the first steps in such a process and good data citation is an important prerequisite to enable this. New roles are evolving to support researchers in this process with support in managing, archiving, discovering, interpreting and citing data. This report sets out the current thinking on data citation best practice and presents the results of a survey of librarians asking how new support roles could and should be developed. The findings presented here build on the extensive desk research carried out for the report “Integration of Data and Publication” (Reilly, Schallier, Schrimpf, Smit, & Wilkinson, Sept 2011), which identified that data citation was an area of opportunity for both researchers and libraries. That report also recounted the findings of a workshop held at the LIBER 2011 Conference in Barcelona.