Παραπομπή σε μορφή APA (7η εκδ.)

Sharma, A. (2017). General studies for civil services preliminary examination GS paper-II (UPSC). McGraw hill Education.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Sharma, Arun. General Studies for Civil Services Preliminary Examination GS Paper-II (UPSC). Chennai: McGraw hill Education, 2017.

Παραπομπή σε μορφή MLA (9th εκδ.)

Sharma, Arun. General Studies for Civil Services Preliminary Examination GS Paper-II (UPSC). McGraw hill Education, 2017.