Citazione Stile APA (7a Edizione)

Nunn, E., & Firth, C. B. (1946). History (Second series, revised edition, 1. publ., 7. impression.). Ginn.

Citazione stile Chigago Style (17a edizione)

Nunn, Elsa, e Catherine B. Firth. History. Second series, revised edition, 1. publ., 7. impression. London: Ginn, 1946.

Citatione MLA (9a ed.)

Nunn, Elsa, e Catherine B. Firth. History. Second series, revised edition, 1. publ., 7. impression. Ginn, 1946.