Cita APA (7a ed.)

Winkler, H. R. (1966). Great Britain in the twentieth century (2nd ed.). American Historical Assoc., Service Center for Teachers of History.

Cita Chicago Style (17a ed.)

Winkler, Henry R. Great Britain in the Twentieth Century. 2nd ed. Washington, DC: American Historical Assoc., Service Center for Teachers of History, 1966.

Cita MLA (9a ed.)

Winkler, Henry R. Great Britain in the Twentieth Century. 2nd ed. American Historical Assoc., Service Center for Teachers of History, 1966.