APA (7th ed.) Citation

Horn, D. B. (1967). Great Britain and Europe in the eighteenth century. Clarendon Press.

Chicago Style (17th ed.) Citation

Horn, D. B. Great Britain and Europe in the Eighteenth Century. Oxford: Clarendon Press, 1967.

MLA (9th ed.) Citation

Horn, D. B. Great Britain and Europe in the Eighteenth Century. Clarendon Press, 1967.