CMS Design Patterns...... anyone?

During my years as a developer I have worked with a lot of content management systems. Hell, I've even helped develop a couple. Over the last 18 months I have been working extensively with;

• EpiServer
• Sitefinity
• Kentico
• Umbrao

Having worked with all of these systems I come across the same design problems again and again, never quite sure which solution is the correct one. What I am looking for is an authoritative tome on CMS design patterns. Scratch that. I'm looking for any tome on CMS design patterns. So far a quick Google and a sift through the dusty back shelves of Amazon have turned up nothing.

So if anyone knows of any books on CMS design patterns, be sure to let me know.