Cita APA (7a ed.)

Campbell, J. (1987). History of policing in Guyana. Guyana Police Force.

Cita Chicago Style (17a ed.)

Campbell, John. History of Policing in Guyana. Georgetown: Guyana Police Force, 1987.

Cita MLA (9a ed.)

Campbell, John. History of Policing in Guyana. Guyana Police Force, 1987.