Petrova, E., Stoykov, S. Humanistic perception of national security - a basic concept for security and defense education and training. София: 2021 45-468,.
Petrova, E., Stoykov, S. Humanistic perception of national security - a basic concept for security and defense education and training. София: 2021 45-468,.
Petrova, E., Stoykov, S. (2021) Humanistic perception of national security - a basic concept for security and defense education and training, София: 45-468,.
Petrova, E., & Stoykov, S. (2021). Humanistic perception of national security - a basic concept for security and defense education and training. София: 45-468.
Petrova E, Stoykov S. Humanistic perception of national security - a basic concept for security and defense education and training. София: 2021. p. 45-468.
