Cita APA (7a ed.)
Nicolson, H., & Nicolson, N. Diaries and Letters [by Harold Nicolson]: 1930-1939. Collins.
Cita estilo Chicago (17a ed.)
Nicolson, Harold, y Nigel Nicolson. Diaries and Letters [by Harold Nicolson]: 1930-1939. Londres, Inglaterra: Collins.
Cita MLA (9a ed.)
Nicolson, Harold, y Nigel Nicolson. Diaries and Letters [by Harold Nicolson]: 1930-1939. Collins.
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