Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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