Cita APA (7a ed.)

Firth, C. B. (1949). History (Second series, teachers' book, 1. publ., 2. impression.). Ginn.

Cita Chicago Style (17a ed.)

Firth, Catherine B. History. Second series, teachers' book, 1. publ., 2. impression. London: Ginn, 1949.

Cita MLA (9a ed.)

Firth, Catherine B. History. Second series, teachers' book, 1. publ., 2. impression. Ginn, 1949.