Cita APA (7a ed.)

Firth, C. B. (1950). History (Second series, revised edition.). Ginn.

Cita Chicago Style (17a ed.)

Firth, Catherine B. History. Second series, revised edition. London: Ginn, 1950.

Cita MLA (9a ed.)

Firth, Catherine B. History. Second series, revised edition. Ginn, 1950.