Cita APA (7a ed.)

Arnstein, W. L., & Smtih, L. B. (1966). Britain yesterday and today: 1830 to the present. D. C. Heath.

Cita Chicago Style (17a ed.)

Arnstein, Walter L., y Lacey Baldwin Smtih. Britain Yesterday and Today: 1830 to the Present. Boston: D. C. Heath, 1966.

Cita MLA (9a ed.)

Arnstein, Walter L., y Lacey Baldwin Smtih. Britain Yesterday and Today: 1830 to the Present. D. C. Heath, 1966.