Karthikeyan M., a. (2016). Internal security for civil services main examinations: GS Paper III (1st edition.). Pearson India Education Services.
Cita Chicago Style (17a ed.)Karthikeyan M., author. Internal Security for Civil Services Main Examinations: GS Paper III. 1st edition. Noida: Pearson India Education Services, 2016.
Cita MLA (9a ed.)Karthikeyan M., author. Internal Security for Civil Services Main Examinations: GS Paper III. 1st edition. Pearson India Education Services, 2016.
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