Cita APA (7a ed.)

Turnbull, E. L. (1937). The Middle Ages (1. publ.). Methuen.

Cita Chicago Style (17a ed.)

Turnbull, E. Lucia. The Middle Ages. 1. publ. London: Methuen, 1937.

Cita MLA (9a ed.)

Turnbull, E. Lucia. The Middle Ages. 1. publ. Methuen, 1937.