Seems like for both Ukraine and Poland there is a blank spot for this period of history that is written in English. Most books mention either theaters only in passing or only look at one specific episode, like for Poland the book by Norman Davies White Eagle, Red Star looks only at Polish Soviet war of 19-20, while for 1917-1919 events there is nothing that I have found. For history of Ukraine the situation is even worse, only books written in English that mention this period are books that look at the history of Ukraine in much larger period, devoting to the 1917-1921 events only couple pages at most.
So as a last resort I am asking for the help here before stopping my efforts to understand this period of history, maybe someone happens to know a book on the subjects I am looking for that I might have missed in my search.
I can name you a few books on Ukraine around that time, but those are specificically on the Ukranian Makhno movement.
Colin Darch (2020). Nestor Makhno and Rural Anarchism in Ukraine, 1917–21.
Michael Palij (1976). The Anarchism of Nestor Makhno, 1918–1921. An Aspect of the Ukrainian Revolution.
Michael Malet (1982). Nestor Makhno in the Russian civil war.
Alexandre Skirda (2004). Nestor Makhno: Anarchy’s Cossack. The Struggle for Free Soviets in Ukraine 1917–1921. [A Makhno Biography, but a large part deals with the Civil War]
I know it has been four months since you posted your question, but if you still are interested in English-language monographs and collections of articles on the Ukrainian Revolution of 1917-1921, here is a list. Quite a few are on the pogroms and the Jewish population of Ukraine, as my research has mostly focused on interactions between Ukrainians and ethnic minorities during the Revolution, but some books discuss other topics:
Abramson, Henry. Ukrainians and Jews in Revolutionary Times: A Prayer for the Government. Rev. ed. N.p.: Sam Sapozhnik Publishers, 2018.
Astashkevich, Irina. Gendered Violence: Jewish Women in the Pogroms of 1917 to 1921. Boston: Academic Studies Press, 2018.
Dornik, Wolfram, editor. The Emergence of Ukraine: Self-Determination, Occupation and War in Ukraine, 1917-1922. Translated by Gus Fagan. Toronto: Canadian Institute of Ukrainian Studies Press, 2015. https://diasporiana.org.ua/ukrainica/the-emergence-of-ukraine-self-determination-occupation-and-war-in-ukraine-1917-1922/.
Hunczak, Taras. Symon Petliura and the Jews: A Reappraisal. Edited by Lubomyr Wynar. New York: Rutgers University Press, 2008. https://chtyvo.org.ua/authors/Hunchak_Taras/Symon_Petliura_and_the_Jews/.*
Kuchabsky, Vasyl. Western Ukraine in Conflict with Poland and Bolshevism, 1918–1920. Edmonton: Canadian Institute of Ukrainian Studies Press, 2009.
Nahayewsky, Isidore. History of the Modern Ukrainian State, 1917-1923. Munich: Ukrainian Free University Press, 1966.
Palij, Michael. The Ukrainian-Polish Defensive Alliance, 1919–1921. Edmonton: Canadian Institute of Ukrainian Studies Press, 1995.
Rabinovitch, Simon. Jewish Rights, National Rites: Nationalism and Autonomy in Late Imperial and Revolutionary Russia. Stanford: Stanford University Press, 2014.
Velychenko, Stephen. State Building in Revolutionary Ukraine: A Comparative Study of Governments and Bureaucrats, 1917–1922. Toronto: University of Toronto Press, 2011. https://diasporiana.org.ua/politologiya/velychenko-s-state-building-in-revolutionary-ukraine-a-comparative-study-of-governments-and-bureaucrats-1917-1922/.
* Although it is advisable to read this alongside Zosa Szajkowski's published Rebuttal and letter in response to Hunczak's response to the Rebuttal. The question of Petliura's responsibility for the pogroms of 1919 was a major debate. It should also be mentioned that both Hunczak and Szajkowski had personal connections with the subject, which is why some of their back-and-forth had a bit more emotional edge than normal in academic discourse.
Szajkowski, Zosa. “‘A Reappraisal of Symon Petliura and Ukrainian-Jewish Relations:’ A Rebuttal.” In Jewish Social Studies 31, № 3 (July 1969): 184-213. https://www.jstor.org/stable/4466502.
Hunczak, Taras, and Zosa Szajkowski. Letters to the editors. In Jewish Social Studies 32, № 3 (July 1970): 246-263.