This article addresses the need for a theoretical approach to reference research and specifically concentrates on a lacuna in conceptual research on social reference. Social reference refers to online question answering services that are provided by communities of volunteers on question and answer (Q&A) sites. Social reference is similar to library reference, but at the same time, it differs significantly from the traditional (and digital) dyadic reference encounter; it involves a collaborative group effort and uses wikis and other Web 2.0 infrastructure. This article proposes a sociotechnical framework to analyze, evaluate, and understand social reference that relies on a systems approach to the reference encounter, combined with an input-process-output (IPO) approach to virtual group work. The framework also accounts for the collaborative process of question answering and the interplay between technology and users, in their contexts.