Cita APA (7a ed.)

Bell, D. S., & Gaffney, J. (1990). European immigration policy. Pergamon.

Cita Chicago Style (17a ed.)

Bell, David Scott, y John Gaffney. European Immigration Policy. Oxford, UK ; Elmsford, NY: Pergamon, 1990.

Cita MLA (8a ed.)

Bell, David Scott, y John Gaffney. European Immigration Policy. Pergamon, 1990.