APA (7th ed.) Citation

Sitwell, S., & Smith, E. (1961). Great houses of Europe. Weidenfeld and Nicolson.

Chicago Style (17th ed.) Citation

Sitwell, Sacheverell, and Edwin Smith. Great Houses of Europe. London: Weidenfeld and Nicolson, 1961.

MLA (9th ed.) Citation

Sitwell, Sacheverell, and Edwin Smith. Great Houses of Europe. Weidenfeld and Nicolson, 1961.

Warning: These citations may not always be 100% accurate.