Παραπομπή APA

Thorpe,Edgar, & Thorpe,Showick. (2019). General Studies for Civil services preliminary examination-Paper-1 Vol.1. Pearson.

Παραπομπή Chicago Style

Thorpe,Edgar, και Thorpe,Showick. General Studies for Civil Services Preliminary Examination-Paper-1 Vol.1. Noida: Pearson, 2019.

Παραπομπή MLA

Thorpe,Edgar, και Thorpe,Showick. General Studies for Civil Services Preliminary Examination-Paper-1 Vol.1. Pearson, 2019.