The OP was only asking for a book recommendation. There is a rule against posting material FROM unapproved revelations, but asking for book suggestion is not the same thing as posting “Mary said (insert controversial statement here)”.
I am a little concerned about this topic now. My pastor is very orthodox, and for the first few years in our parish was citing doctrinal content from public revelation constantly, in sermons and parish bulletin. This was refreshing to me, since other pastors I had avoided doctrinal content.
During 2013 he began to change…I won’t speculate on the reason why 2013…
Now he brings in private revelations to half his sermons and details in parish bulletins. Last week he cited Garabandal, this week he cited Akita (Japan, 1973). He constantly refers to Mary’s warnings about “priest against priest, bishop against bishop, cardinal against cardinal”; and that the cause of the true Faith needs to be defended…even against opponents in the Church.
I think his heart is in the right place, and I share his frustration with the ambiguity and lack of doctrinal clarity often perceived in the Church. But I don’t know that private revelation is the solution, when it is public revelation that is much more under siege by the secular world.