APA

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

Chicago

Nicolson Harold George, Nicolson Nigel, . 1967. The war years, 1939-1945. New York: Atheneum.

Harvard

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

MLA

Nicolson Harold George, Nicolson Nigel, . The war years, 1939-1945. New York: Atheneum. 1967.