Παραπομπή APA

Derry, T. (1961). United Kingdom: A survey of British institutions to-day. Longman.

Παραπομπή Chicago Style

Derry, T.K. United Kingdom: A Survey of British Institutions To-day. Toronto: Longman, 1961.

Παραπομπή MLA

Derry, T.K. United Kingdom: A Survey of British Institutions To-day. Longman, 1961.