The Buchanan book is good, but it doesn’t have much to do with the U.S. (if that’s what you’re looking for). For that, you should read the discussion of Wilson and World War I in Buchanan’s book A Republic, Not an Empire.
When I did the readings for my presentations, I didn’t think of myself as providing a bibliography. I was trying to come up with a reading or two that a busy person might plausibly do. The WWII reading list was assembled by guest lecturer Hunt Tooley.
On World War I, I recommend the book I suggest in my video: Hunt Tooley, The Western Front. It’s more up-to-date than any of those old books. On World War II overall, the Buchanan book is indeed very good.