Yousif, Bassam, Saleh Shaker, and Azza Abdul Kadir. “Role of Using Ready-Made Statistical Software in the Completion of Scientific Researches”. TANMIYAT AL-RAFIDAIN 32, no. 101 (December 1, 2010): 99–134. Accessed September 8, 2025. https://tanmiyat.uomosul.edu.iq/index.php/tanmiyat/article/view/30104.