Nicolson, S. H. G., & Nicolson, N. (1966). Diaries and letters, 1930-1939. Atheneum.
Lua i Stíl Chicago (17ú heag.)Nicolson, Sir Harold George, agus Nigel Nicolson. Diaries and Letters, 1930-1939. New York: Atheneum, 1966.
Lua MLA (9ú heag.)Nicolson, Sir Harold George, agus Nigel Nicolson. Diaries and Letters, 1930-1939. Atheneum, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.