^Grampp, William D. (2021). "How Britain Turned to Free Trade". The Business History Review. 61 (1): 86–112. doi:10.2307/3115775. JSTOR3115775.Parameter |s2cid= yang tidak diketahui akan diabaikan (bantuan)
^Jeroen Deploige; Gita Deneckere, ed. (2006). Mystifying the Monarch: Studies on Discourse, Power, and History. Amsterdam University Press. hlm. 195. ISBN978-90-5356-767-8. ... preference for the (conservative-liberal) Whigs. But until the second half of the nineteenth century, ...
^Efraim Podoksik, ed. (2013). In Defence of Modernity: Vision and Philosophy in Michael Oakeshott. Imprint Academic. hlm. 14. ISBN978-1-84540-468-0. ... For Whig liberalism is also known as 'conservative liberalism' ...
^James Frey, ed. (2020). The Indian Rebellion, 1857–1859: A Short History with Documents. Hackett Publishing. hlm. XXX. ISBN978-1-62466-905-7. British politics of the first half of the nineteenth century was an ideological spectrum, with the Tories, or Conservative Party, on the right, the Whigs as liberal-centrists, and the radicals on the left.
^Hay, William (2004). The Whig Revival, 1808–1830. Springer. hlm. 177.
^Richard Brent (1987). The Whigs and Protestant Dissent in the Decade of Reform: The Case of Church Rates, 1833–1841. Oxford University Press. hlm. 887–910.