Παραπομπή APA

J K Chopra. (2013). Unique Quintessence of General Studies Paper-1 2013: Must read manual for UPSC/ State civil services preliminary examination. New Delhi.

Παραπομπή Chicago Style

J K Chopra. Unique Quintessence of General Studies Paper-1 2013: Must Read Manual for UPSC/ State Civil Services Preliminary Examination. New Delhi, 2013.

Παραπομπή MLA

J K Chopra. Unique Quintessence of General Studies Paper-1 2013: Must Read Manual for UPSC/ State Civil Services Preliminary Examination. New Delhi, 2013.