APA
Karthikeyan M., . (2022). INTERNAL SECURITY: FOR CIVIL SERVICES MAIN EXAMINATION3RD EDITION. Chennai: Pearson.
Chicago
Karthikeyan M, . 2022. INTERNAL SECURITY: FOR CIVIL SERVICES MAIN EXAMINATION3RD EDITION. Chennai: Pearson.
Harvard
Karthikeyan M., . (2022). INTERNAL SECURITY: FOR CIVIL SERVICES MAIN EXAMINATION3RD EDITION. Chennai: Pearson.
MLA
Karthikeyan M, . INTERNAL SECURITY: FOR CIVIL SERVICES MAIN EXAMINATION3RD EDITION. Chennai: Pearson. 2022.