Salih، A. H.، و Ahmed، M. A. (2020). Difficulties in the Production of Weak-Form Words in English Encountered by Sudanese University Students. مجلة الدراسات اللغوية والأدبية، مج21, ع2 ، 37 - 41. مسترجع من http://search.mandumah.com/Record/1072761
Salih، AbdulWahab Hassan، و Mahmoud Ali Ahmed. "Difficulties in the Production of Weak-Form Words in English Encountered By Sudanese University Students." مجلة الدراسات اللغوية والأدبية مج21, ع2 (2020): 37 - 41. مسترجع من http://search.mandumah.com/Record/1072761