APA (7th ed.) Citation

Smith, A. L. (1938). Church and state in the middle ages: The Ford lectures delivered at Oxford in 1905. University Press.

Chicago Style (17th ed.) Citation

Smith, A. L. Church and State in the Middle Ages: The Ford Lectures Delivered at Oxford in 1905. Oxford: University Press, 1938.

MLA (8th ed.) Citation

Smith, A. L. Church and State in the Middle Ages: The Ford Lectures Delivered at Oxford in 1905. University Press, 1938.