Can you say you are well versed in a particular book? Or it has to be a discipline such as politics, Roman history, etc?
He is well versed in "A Comprehensive History of Taiwan?"
Thanks.
I think it's only usual to use
well versed for quite a wide field. One book seems not enough, unless it's a huge work. I'm reading a twenty novel cycle by one author at the moment: I don't think that's quite big enough. We might say that someone was well versed in the Bible, but your suggestions of Politics, Roman History, are much more suitable.