एपीए उद्धरण

Ashok Kumar & Danips , V. (2015). Challenges to internal security of India: For civil services main examination (2nd ed.). McGraw Hill Education (India) Pvt Ltd.

शिकागो स्टाइल उद्धरण

Ashok Kumar और Vipul Danips. Challenges to Internal Security of India: For Civil Services Main Examination. 2nd ed. New Delhi: McGraw Hill Education (India) Pvt Ltd, 2015.

एमएलए उद्धरण

Ashok Kumar और Vipul Danips. Challenges to Internal Security of India: For Civil Services Main Examination. 2nd ed. McGraw Hill Education (India) Pvt Ltd, 2015.