Thorpe, E., & Thorpe, S. (2007). General studies manual 2007 for the UPSC civil services preliminary examination. Pearson.
استشهاد بنمط شيكاغوThorpe, Edgar, و Showick Thorpe. General Studies Manual 2007 for the UPSC Civil Services Preliminary Examination. Dehi: Pearson, 2007.
MLA استشهادThorpe, Edgar, و Showick Thorpe. General Studies Manual 2007 for the UPSC Civil Services Preliminary Examination. Pearson, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.