APA (7th ed.) Zitazioa

Robson, W. A. (1955). The british system of government. Longmans, Green and Company.

Chicago Style (17th ed.) Zitazioa

Robson, William A. The British System of Government. Londres: Longmans, Green and Company, 1955.

MLA (9th ed.) Zitazioa

Robson, William A. The British System of Government. Longmans, Green and Company, 1955.