Cita APA (7a ed.)

Ketelbey, C. D. M. (1955). A history of modern times: From 1789 (New ed., revised.). Harrap.

Cita Chicago Style (17a ed.)

Ketelbey, C. D. M. A History of Modern Times: From 1789. New ed., revised. London [u.a.]: Harrap, 1955.

Cita MLA (9a ed.)

Ketelbey, C. D. M. A History of Modern Times: From 1789. New ed., revised. Harrap, 1955.