Cita APA (7a ed.)

Yardley,D C M. (1986). Principles of administrative law (2nd ed.). Butterworths..

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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