Walpole, H. 4. e. o. O., & Hadley, W. (1926). Selected letters. Dent.
Lua i Stíl Chicago (17ú heag.)Walpole, Horace 4th earl of Oxford, agus William Hadley. Selected Letters. London: Dent, 1926.
Lua MLA (9ú heag.)Walpole, Horace 4th earl of Oxford, agus William Hadley. Selected Letters. Dent, 1926.
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