A growing number of collaborative networked organizations can be founded in industry, services, and research. However. the lack of a reference model that could synthesize and formulize the base concepts, principles, and recommended practices, is an obstacle for an easier and more consistent development of the area. Therefore a reference modeling approach is proposed considering multiple modeling perspectives. Examples are given and steps for further research are identified. Establishing a reference model in this area is a long term endeavor; this contribution is aimed as just a step in this process.