Tolong jelaskan mengenai Bacaan tambahan dari Harold Nicolson

Nigel Nicolson, Portrait of a Marriage, (Weidenfeld & Nicolson, 1973), .

Nigel Nicolson (ed.), The Harold Nicolson Diaries 1907–1963, (Weidenfeld & Nicolson, 2004),

James Lees-Milne, Harold Nicolson, A Biography, (Chatto & Windus), 1980, Vol. I (1886–1929), ; 1981, Vol. II (1930–1968), .

Nigel Nicolson (ed.), Vita and Harold. The Letters of Vita Sackville-West and Harold Nicolson 1910–1962 (Weidenfeld & Nicolson, 1992), .

David Cannadine: Portrait of More Than a Marriage: Harold Nicolson and Vita Sackville-West Revisited. From Aspects of Aristocracy, pp. 210–42. (Yale University Press, 1994), .

Norman Rose, Harold Nicolson (Jonathan Cape, 2005), .

Derek Drinkwater, Sir Harold Nicolson & International Relations, ( Oxford University Press, 2005), .

Laurence Bristow-Smith, Harold Nicolson: Half-an-Eye on History. Letterworth Press, 2014. .