Conventional left–right political spectrum
Anonymus
Leach, Robert (1998). British Political Ideologies (Contemporary Political Studies ed.). London: Macmillan International Higher Education. p. 23. <a href="//commons.wikimedia.org/wiki/Special:BookSources/9781349149094" title="Special:BookSources/9781349149094">ISBN 9781349149094</a>. OCLC 1084449643