Cita APA (7a ed.)

Johnson, A. C. (1941). Viscount Halifax. A biography. Hale, Robert L.

Cita Chicago Style (17a ed.)

Johnson, Alan Campbell. Viscount Halifax. A Biography. London: Hale, Robert L, 1941.

Cita MLA (8a ed.)

Johnson, Alan Campbell. Viscount Halifax. A Biography. Hale, Robert L, 1941.