APA (7th ed.) Citation

Nicolson, H. Diaries and letters 1930-1939 / edited by Nigel Nicolson.

Chicago Style (17th ed.) Citation

Nicolson, Harold. Diaries and Letters 1930-1939 / Edited by Nigel Nicolson. London : Collins Fontana Books, 1969.

MLA (8th ed.) Citation

Nicolson, Harold. Diaries and Letters 1930-1939 / Edited by Nigel Nicolson.

Warning: These citations may not always be 100% accurate.