Walter Bagehot (1910). “Literary Studies (Miscellaneous Essays): Hartley Coleridge. Shakespeare, the man. William Cowper. The first Edinburgh reviewers. Edward Gibbon. Percy Bysshe Shelley”
Walter Bagehot (1873). “Physics and Politics: Or, Thoughts on the Application of the Principles of "natural Selection" and "inheritance" to Political Society”, p.61
Walter Bagehot (1873). “Physics and Politics: Or, Thoughts on the Application of the Principles of "natural Selection" and "inheritance" to Political Society”, p.43
Walter Bagehot (1873). “Physics and Politics: Or, Thoughts on the Application of the Principles of "natural Selection" and "inheritance" to Political Society”, p.186