Citazione APA

Parkes, H. B. (1968). The United States of America, A History (3rd ed.). Scientific book agency.

Stile di citazione Chicago

Parkes, Henry Bamford. The United States of America, A History. 3rd ed. Calcutta: Scientific book agency, 1968.

Citazione MLA

Parkes, Henry Bamford. The United States of America, A History. 3rd ed. Scientific book agency, 1968.