Probably you are doing a segmentation kind of analysis (Firstly you are clubbing similar kind of variable i.e. running EFA, and then data reduction/clubing by these obtained factor variables using Cluster Analysis). Many researchers across industry mostly from Psychometrics & Market research are doing similar analysis. As of now I'm missing exact papers for this topic, I'll share you once I get it in my folder.
You can also go through Multivariate Analysis by Hair & Black.
Below are few papers regarding applied factor & cluster analysis.