The 1954 classic study of the Ukrainian Revolution, Borotbism by Ivan Maistrenko has just been republished in a new edition. It was one of the first significant accounts of the revolution in English. Edited by Christopher Ford you can find out more about this fantastic book here:
For Europeans, the best way to buy the book is via:
(https://www.ibidem.eu/de/borotbism-a-chapter-in-the-history-of-the-ukrainian-revolution.html).
For those based in the U.S. and Canada, the easiest way is via Columbia University Press:
(https://cup.columbia.edu/book/borotbism/9783838211077).
Please do obtain a copy Bortotbism or order one for your library.