Παραπομπή σε μορφή APA (7η εκδ.)

Friend, J. K., & Jessop, W. N. (1977). Local government and strategic choice: An operational research approach to the processes of public planning (2nd ed.). Pergamon.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Friend, J. K., και William Neil Jessop. Local Government and Strategic Choice: An Operational Research Approach to the Processes of Public Planning. 2nd ed. Oxford: Pergamon, 1977.

Παραπομπή σε μορφή MLA (9th εκδ.)

Friend, J. K., και William Neil Jessop. Local Government and Strategic Choice: An Operational Research Approach to the Processes of Public Planning. 2nd ed. Pergamon, 1977.