I read Baij Nath Puri's doctorate thesis edition from the 1950s, and it really is a very well researched account of Pratihara history. It's still a largely classical history--the deeds and history of Pratihara kings listed in chronology, but does have many innovations such as rich attempts to speculate on cases of confused identity and the relationship held by various Pratihara kings with their many vassal clans. I've yet to find a book dedicated to really bringing to front the religious and cultural life of the Pratihara world--I'll keep looking!
This is a well-researched thesis on the Gurjara Pratiharas. By well-researched I mean that this is no introductory work, and the discussions of sources tend to be extremely specialized; if you're not familiar with the characters, dynasties, and places of north India during the 7th to 11th centuries, it's easy to get lost, to the point of not understanding the paragraphs without doing further research. That being said this work is comprehensive, dealing not only with the family history but also with social, economic, religious, and cultural life during the period.
Excellent book cites all the sources and provides all the details about a forgotten period of Indian history,where education, religion, political hegemony of real indians flourished