Ali، M. E. (2018). The Role of Presentation Stage in Teaching Vocabulary in Some Sudanese Secondary Schools in Khartoum State: Case- Study : Sudanese Secondary School in Khartoum State. مجلة الدراسات اللغوية والأدبية، مج19, ع2 ، 104 - 115. مسترجع من http://search.mandumah.com/Record/1004787
Ali، Mona Elnour. "The Role of Presentation Stage in Teaching Vocabulary in Some Sudanese Secondary Schools in Khartoum State: Case- Study : Sudanese Secondary School in Khartoum State." مجلة الدراسات اللغوية والأدبية مج19, ع2 (2018): 104 - 115. مسترجع من http://search.mandumah.com/Record/1004787