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. "First Page" .e240247 , University Textbooks; Research and Writting, 23, 45, 2020, e240247.

. (2020). 'First Page', University Textbooks; Research and Writting, 23(45), e240247.

, "First Page," University Textbooks; Research and Writting, 23 45 (2020): e240247,

. First Page. University Textbooks; Research and Writting. 2020;23(45):e240247 (In Persian).