Sznajd-Weron, Katarzyna; Sznajd, Józef (June 2005). "Who is left, who is right?". Physica A: Statistical Mechanics and Its Applications (به انگلیسی). 351 (2–4): 593–604. Bibcode:2005PhyA..351..593S. doi:10.1016/j.physa.2004.12.038.
Stapleton, Julia (October 1999). "Resisting the Centre at the Extremes: 'English' Liberalism in the Political Thought of Interwar Britain". The British Journal of Politics and International Relations (به انگلیسی). 1 (3): 270–292. doi:10.1111/1467-856X.00016. ISSN1369-1481. S2CID143494130.
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Sznajd-Weron, Katarzyna; Sznajd, Józef (June 2005). "Who is left, who is right?". Physica A: Statistical Mechanics and Its Applications (به انگلیسی). 351 (2–4): 593–604. Bibcode:2005PhyA..351..593S. doi:10.1016/j.physa.2004.12.038.
Stapleton, Julia (October 1999). "Resisting the Centre at the Extremes: 'English' Liberalism in the Political Thought of Interwar Britain". The British Journal of Politics and International Relations (به انگلیسی). 1 (3): 270–292. doi:10.1111/1467-856X.00016. ISSN1369-1481. S2CID143494130.
Heywood, Andrew (2017). Political Ideologies: An Introduction (6th ed.). Basingstoke: Macmillan International Higher Education. pp. 14–17. ISBN9781137606044. OCLC988218349.
Stapleton, Julia (October 1999). "Resisting the Centre at the Extremes: 'English' Liberalism in the Political Thought of Interwar Britain". The British Journal of Politics and International Relations (به انگلیسی). 1 (3): 270–292. doi:10.1111/1467-856X.00016. ISSN1369-1481. S2CID143494130.