"Finnish Civil War 1918: History, Memory, Legacy" by Tuomas Tepora [debunks Finnish fascist historians] [links to a mirror of Goodreads, you can find it on LibGen, though]
BiblioReads
https://biblioreads.eu.org/book/show/22959704-the-finnish-civil-war-1918
BiblioReads - An Alternative Private Goodreads Front-End