Abdulrahman Al – Tikriti, Harith, & Moataz Hamid Khalaf.
" Second International Association of Workers 1889-1914 (Study on the causes of emergence and collapse).." <em>Journal of Tikrit university for humanities - مجلة جامعة تكريت للعلوم الانسانية</em> [Online], 25.5 (2018): 312-350. Web. 17 May. 2024