MLA

Snodin, Michael, and Cynthia Roman. Horace Walpole's Strawberry Hill. London: Yale University Press, 2009.

APA

Snodin, M., & Roman, C. (2009). Horace Walpole's Strawberry Hill. London: Yale University Press.

Chicago

Snodin, Michael, and Cynthia Roman. Horace Walpole's Strawberry Hill. London: Yale University Press, 2009.