Παραπομπή σε μορφή APA (7η εκδ.)

Williamson, J. L. (1955). A survey of police services and problems in the Philippines. Institute of Public Administration, University of the Philippines.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Williamson, Jeter L. A Survey of Police Services and Problems in the Philippines. Manila: Institute of Public Administration, University of the Philippines, 1955.

Παραπομπή σε μορφή MLA (9th εκδ.)

Williamson, Jeter L. A Survey of Police Services and Problems in the Philippines. Institute of Public Administration, University of the Philippines, 1955.