APA-referens (7:e uppl.)

Spufford, P. (1967). Origins of the English Parliament (C-1.). Longmans.

Chicago-referens (17:e uppl.)

Spufford, Peter. Origins of the English Parliament. C-1. London: Longmans, 1967.

MLA-referens (9:e uppl.)

Spufford, Peter. Origins of the English Parliament. C-1. Longmans, 1967.