USMAN, B. (2017). Issues and challenges of national security. Klamidas Communications.
Cita Chicago (17th ed.)USMAN, Bukar. Issues and Challenges of National Security. Klamidas Communications, 2017.
Cita MLA (9th ed.)USMAN, Bukar. Issues and Challenges of National Security. Klamidas Communications, 2017.
Atenció: Aquestes cites poden no estar 100% correctes.