APA (7th ed.) Citation

Waley, D. P. (1991). Siena and the Sienese in the thirteenth century. Cambridge University Press.

Chicago Style (17th ed.) Citation

Waley, Daniel Philip. Siena and the Sienese in the Thirteenth Century. Cambridge: Cambridge University Press, 1991.

MLA (9th ed.) Citation

Waley, Daniel Philip. Siena and the Sienese in the Thirteenth Century. Cambridge University Press, 1991.