Cita APA (7a ed.)

Thackrah, J. R., & Thackrah, J. R. (1985). Contemporary policing: An examination of society in the 1980s. Sphere Reference.

Cita Chicago Style (17a ed.)

Thackrah, John R., y John Richard Thackrah. Contemporary Policing: An Examination of Society in the 1980s. London: Sphere Reference, 1985.

Cita MLA (8a ed.)

Thackrah, John R., y John Richard Thackrah. Contemporary Policing: An Examination of Society in the 1980s. Sphere Reference, 1985.