Khomenko, V. “The Issue of Cooperation of Mykhailo Hrushevsky With the Ukrainian Party of Socialist Revolutionaries in Ukrainian Emigration Historiography”. Eminak: Scientific Quarterly Journal, Vol. 1, no. 4 (24), Dec. 2018, pp. 128-34, https://eminak.net.ua/index.php/eminak/article/view/109.