CMMI For Acquisition: Guidelines for Improving the Acquisition of Products and Services
Gallagher, B., M. Phillips, K. Richter, and S. Shrum. 2011. CMMI For Acquisition: Guidelines for Improving the Acquisition of Products and Services, second ed. Upper Saddle River, NJ, USA: Addison Wesley.
This source is considered a primary reference for the Systems Engineering and Other Disciplines article.
Please note that this is a document created as a companion to the current version of the CMMI for Acquisition Guidance; it is not the same as the SEI/CMU guidance itself. To review the most current CMMI for Acquisition guidance (version 1.3), please see the SEI website.