McGraw Hill Education Series. (2014). General Studies for civil Services Preliminary Examination - Paer - II- 2014. McGraw Hill Education (India) Pvt. Ltd.
Chicago-čujuhus (17. p.)McGraw Hill Education Series. General Studies for Civil Services Preliminary Examination - Paer - II- 2014. New Delhi: McGraw Hill Education (India) Pvt. Ltd, 2014.
MLA-čujuhus (9. p.)McGraw Hill Education Series. General Studies for Civil Services Preliminary Examination - Paer - II- 2014. McGraw Hill Education (India) Pvt. Ltd, 2014.
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