Cita APA (7a ed.)

Snacken, S., & Zyl Smit, D. v. (2013). Distinctive features of European penology and penal policy-making. European penology?, 3-26.

Cita Chicago Style (17a ed.)

Snacken, Sonja, y Dirk van Zyl Smit. "Distinctive Features of European Penology and Penal Policy-making." European Penology? 2013: 3-26.

Cita MLA (8a ed.)

Snacken, Sonja, y Dirk van Zyl Smit. "Distinctive Features of European Penology and Penal Policy-making." European Penology?, 2013, pp. 3-26.