Katarzyna Sznajd-Weron; Józef Sznajd (جون 2005). "Who is left, who is right?". Physica A: Statistical Mechanics and Its Applications (انگریزی میں). 351 (2–4): 593–604. Bibcode:2005PhyA..351..593S. DOI:10.1016/j.physa.2004.12.038.
Julia Stapleton (اکتوبر 1999). "Resisting the Centre at the Extremes: 'English' Liberalism in the Political Thought of Interwar Britain". The British Journal of Politics and International Relations (انگریزی میں). 1 (3): 270–292. DOI:10.1111/1467-856X.00016. ISSN:1369-1481. S2CID:143494130.
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Katarzyna Sznajd-Weron; Józef Sznajd (جون 2005). "Who is left, who is right?". Physica A: Statistical Mechanics and Its Applications (انگریزی میں). 351 (2–4): 593–604. Bibcode:2005PhyA..351..593S. DOI:10.1016/j.physa.2004.12.038.
Julia Stapleton (اکتوبر 1999). "Resisting the Centre at the Extremes: 'English' Liberalism in the Political Thought of Interwar Britain". The British Journal of Politics and International Relations (انگریزی میں). 1 (3): 270–292. DOI:10.1111/1467-856X.00016. ISSN:1369-1481. S2CID:143494130.
Andrew Heywood (2017)۔ Political Ideologies: An Introduction (6th ایڈیشن)۔ Basingstoke: Macmillan International Higher Education۔ ص 14–17۔ ISBN:9781137606044۔ OCLC:988218349
Julia Stapleton (اکتوبر 1999). "Resisting the Centre at the Extremes: 'English' Liberalism in the Political Thought of Interwar Britain". The British Journal of Politics and International Relations (انگریزی میں). 1 (3): 270–292. DOI:10.1111/1467-856X.00016. ISSN:1369-1481. S2CID:143494130.
Alan Fenna؛ Jane Robbins؛ John Summers (2013)۔ Government Politics in Australia۔ Robbins, Jane., Summers, John. (10th ایڈیشن)۔ Melbourne: Pearson Higher Education AU۔ ص 126 f۔ ISBN:9781486001385۔ OCLC:1021804010Fenna, Alan; Robbins, Jane; Summers, John (2013). Government Politics in Australia. Robbins, Jane., Summers, John. (10th ed.). Melbourne: Pearson Higher Education AU. pp. 126 f. ISBN9781486001385. OCLC1021804010.
Nancy Sue Love (2006)۔ Understanding Dogmas and Dreams (Second ایڈیشن)۔ Washington, District of Columbia: CQ Press۔ ص 16۔ ISBN:9781483371115۔ OCLC:893684473Love, Nancy Sue (2006). Understanding Dogmas and Dreams (Second ed.). Washington, District of Columbia: CQ Press. p. 16. ISBN9781483371115. OCLC893684473.