Hakeem, F. H., & Rodriguez, F. (1983). An investigation of the effect of testing as an aid in the instructional process on the EFL students' learning of grammar. University of Kansas.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hakeem, Farid Hassan, و Fred Rodriguez. An Investigation of the Effect of Testing as an Aid in the Instructional Process on the EFL Students' Learning of Grammar. Kansas: University of Kansas, 1983.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Hakeem, Farid Hassan, و Fred Rodriguez. An Investigation of the Effect of Testing as an Aid in the Instructional Process on the EFL Students' Learning of Grammar. University of Kansas, 1983.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.