Cita APA (7a ed.)

Blackmore, J. (1978). Are police allowed to have problems of their own? [s.n.].

Cita Chicago Style (17a ed.)

Blackmore, John. Are Police Allowed to Have Problems of Their Own? [S.l.]: [s.n.], 1978.

Cita MLA (9a ed.)

Blackmore, John. Are Police Allowed to Have Problems of Their Own? [s.n.], 1978.