Historians for Louis XIV?Watch
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Just quoting in Puddles the Monkey so she can move the thread if needed
Useful historians to use re. Louis XIV could include Ragnhild Hatton and possibly Hugh Trevor-Roper, but THE greatest book ever written (imo) has to be Louis XIV: France and Europe 1661-1715 by Richard Wilkinson. My A level tutor swore by this book when I sat my A level (back in 2011-13), and it was the most useful text I found that covered pretty much every topic on the course. Honestly, you need to buy Wilkinson's book if it is the only book you buy, plus he also alludes to other historians in the text if I'm not mistaken, so reading this book will also open you up to other historians who write on the topic.
Hope this helps!