
You might want to start with EIA-649B and/or IEEE-828 to get the necessary principles and definitions for CM. Worked with a good management book (I suggest something by Koontz and O'Donnell), you get a better idea of managing configurations and its relationship with the management discipline in general.
For assessments, a good place to start would be the CM section of the "CMMI for Development." It gives a pretty good presentation of the goals, principles, and practices of the discipline. Also, it provides examples of the types of work products, artifacts, and data that show evidence that the practices are being conducted.
With that said, it is very important to remember the phrase "an appropriate level of CM."