Cita APA (7a ed.)

Wilkes, J. (1977). The London police in the nineteenth century. Cambridge Univ. Pr.

Cita Chicago Style (17a ed.)

Wilkes, John. The London Police in the Nineteenth Century. London [u.a.]: Cambridge Univ. Pr, 1977.

Cita MLA (8a ed.)

Wilkes, John. The London Police in the Nineteenth Century. Cambridge Univ. Pr, 1977.