Cita APA (7a ed.)

Nicolson, H., & Nicolson, N. (1967). The war years: 1939-1945. Atheneum.

Cita Chicago Style (17a ed.)

Nicolson, Harold, y Nigel Nicolson. The War Years: 1939-1945. New York: Atheneum, 1967.

Cita MLA (9a ed.)

Nicolson, Harold, y Nigel Nicolson. The War Years: 1939-1945. Atheneum, 1967.