Thorpe,Edgar, & Thorpe,Showick. (2019). General Studies for Civil services preliminary examination-Paper-1 Vol.1. Pearson.
استشهاد بنمط شيكاغوThorpe,Edgar, و Thorpe,Showick. General Studies for Civil Services Preliminary Examination-Paper-1 Vol.1. Noida: Pearson, 2019.
MLA استشهادThorpe,Edgar, و Thorpe,Showick. General Studies for Civil Services Preliminary Examination-Paper-1 Vol.1. Pearson, 2019.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.