It is common to cite traditional scholarly literature such as conference papers and journal articles. The mechanism for doing this is widely accepted and practiced. The practice of citing data objects is becoming more common. Mechanisms and manners for doing this exist but are not yet widely accepted, but it is a practice that should be supported and encouraged. The practice of citing other constructs related to and variants of data objects such as studies, data streams, instruments, and variables is uncommon and, in general, lacks the manners and mechanisms needed for it to emerge as a practice. Cite reports. The new version of DDI presents an opportunity to enable this capability for the community that uses it and to demonstrate the possibility to other communities in taking a standards approach.