Παραπομπή APA

Yardley,D C M. (1974). Introduction to British constitutional law (4th ed.). Butteworths.

Παραπομπή Chicago Style

Yardley,D C M. Introduction to British Constitutional Law. 4th ed. London: Butteworths, 1974.

Παραπομπή MLA

Yardley,D C M. Introduction to British Constitutional Law. 4th ed. Butteworths, 1974.