Mokhtar Jaafar. (2010). Soil erosion, diffuse source pollution and sediment problems associated with maize cultivation in England. University of Exeter.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Mokhtar Jaafar. Soil Erosion, Diffuse Source Pollution and Sediment Problems Associated with Maize Cultivation in England. England: University of Exeter, 2010.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Mokhtar Jaafar. Soil Erosion, Diffuse Source Pollution and Sediment Problems Associated with Maize Cultivation in England. University of Exeter, 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.