Cita APA (7th ed.)

Havighurst, A. F. (1966). Twentieth century Britain (2a. ed.). Harper Row.

Cita Chicago (17th ed.)

Havighurst, Alfred F. Twentieth Century Britain. 2a. ed. Nueva York: Harper Row, 1966.

Cita MLA (9th ed.)

Havighurst, Alfred F. Twentieth Century Britain. 2a. ed. Harper Row, 1966.