Edmund Phipps, Memoirs of the Political and Literary Life of Robert Plumer Ward vol. 1 (1850), pp. 12–15 and note; archive.org.
A treatise of the relative rights and duties of belligerent and neutral powers in maritime affairs; in which the principles of armed neutralities and the opinion of Hubner and Schlegel are fully discussed (1875); archive.org.
Robert Beatson, A Political Index to the Histories of Great Britain & Ireland vol. 1 (1806), p. 409; Google Books.
William Gifford; Sir John Taylor Coleridge; John Gibson Lockhart; Whitwell Elwin, William Macpherson, Sir William Smith, Sir John Murray IV, Rowland Edmund Prothero Baron Ernle, George Walter Prothero (1850). The Quarterly Review. John Murray. p. 260.{{cite book}}: CS1 maint: multiple names: authors list (link)