APA-Zitierstil (7. Ausg.)

Waard, J. d. (1993). Private security in Europe. European journal on criminal policy and research, 1(1), 108-111.

Chicago-Zitierstil (17. Ausg.)

Waard, Jaap de. "Private Security in Europe." European Journal on Criminal Policy and Research 1, no. 1 (1993): 108-111.

MLA-Zitierstil (9. Ausg.)

Waard, Jaap de. "Private Security in Europe." European Journal on Criminal Policy and Research, vol. 1, no. 1, 1993, pp. 108-111.