Ashish kumar Vashist & Ramesh Singh. (2012). 1000 Plus questions on general science general studies for civil services preliminary examination: Paper: 1 (Second.). New Delhi.
Chicago Edition CitationAshish kumar Vashist and Ramesh Singh. 1000 Plus Questions on General Science General Studies for Civil Services Preliminary Examination: Paper: 1. Second. New Delhi, 2012.
MLA Edition CitationAshish kumar Vashist and Ramesh Singh. 1000 Plus Questions on General Science General Studies for Civil Services Preliminary Examination: Paper: 1. Second. New Delhi, 2012.
Warning: These citations may not always be 100% accurate.