CRC concise encyclopedia of mathematics - Weisstein, Eric W. (Boca Raton, Fla. : CRC Press, 1999)
http://www.amazon.com/CRC-Concise-Encyclopedia-Mathematics/dp/0849396409/ref=sr_1_1?s=books&ie=UTF8&qid=1413891962&sr=1-1&keywords=0849396409
Includes bibliographical references.
Keywords: Mathematics -- Encyclopedias