Παραπομπή APA

Yardley, D. C. M. (1986). Principles of Administrative Law (2nd ed.). Butterworths.

Παραπομπή Chicago Style

Yardley, D. C. M. Principles of Administrative Law. 2nd ed. London: Butterworths, 1986.

Παραπομπή MLA

Yardley, D. C. M. Principles of Administrative Law. 2nd ed. Butterworths, 1986.