The Oxford American Dictionary and Language Guide: Oxford University Press: 9780195134490: Amazon.com: Books
The Shorter Oxford English Dictionary (Plain): Little, William, Fowler, H. W., Coulson, J., Friedrichsen, G. W. S., Onions, C. T.: 9780198611264: Amazon.com: Books
Oxford Dictionary of Quotations: Knowles, Elizabeth: 9780199668700: Amazon.com: Books