Παραπομπή APA

Kumar Vashist Ashish & Singh Ramesh. (2012). 1000 Plus Questions on General Science General Studies: For Civil Services Preliminary Examination Paper-1. New Delhi.

Παραπομπή Chicago Style

Kumar Vashist Ashish και Singh Ramesh. 1000 Plus Questions on General Science General Studies: For Civil Services Preliminary Examination Paper-1. New Delhi, 2012.

Παραπομπή MLA

Kumar Vashist Ashish και Singh Ramesh. 1000 Plus Questions on General Science General Studies: For Civil Services Preliminary Examination Paper-1. New Delhi, 2012.