Sandhu Ramandeep Singh. (2020). National Security Challenges. Pentagon Press.
Čikaški stil citiranja (17. izdanje)Sandhu Ramandeep Singh. National Security Challenges. New Delhi: Pentagon Press, 2020.
MLA način citiranja (9. izdanje)Sandhu Ramandeep Singh. National Security Challenges. Pentagon Press, 2020.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.