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. "First Page" .e36861 , University Textbooks; Research and Writting, 22, 43, 2019, e36861.

. (2019). 'First Page', University Textbooks; Research and Writting, 22(43), e36861.

, "First Page," University Textbooks; Research and Writting, 22 43 (2019): e36861,

. First Page. University Textbooks; Research and Writting. 2019;22(43):e36861 (In Persian).