APA-referens (7:e uppl.)

Kumar, A. (2022). Challenges to Internal Security (5th ed.). McGraw-Hill.

Chicago-referens (17:e uppl.)

Kumar, Ashok. Challenges to Internal Security. 5th ed. Chennai: McGraw-Hill, 2022.

MLA-referens (9:e uppl.)

Kumar, Ashok. Challenges to Internal Security. 5th ed. McGraw-Hill, 2022.