Punjab (Pakistan). Curriculum Research & Development Centre. (1977). Report on evaluation of text books for classes VI & IX English. Curriculum Research & Development Centre, Punjab Education Dept..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Punjab (Pakistan). Curriculum Research & Development Centre. Report on Evaluation of Text Books for Classes VI & IX English. Lahore: Curriculum Research & Development Centre, Punjab Education Dept., 1977.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Punjab (Pakistan). Curriculum Research & Development Centre. Report on Evaluation of Text Books for Classes VI & IX English. Curriculum Research & Development Centre, Punjab Education Dept., 1977.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.