By Roberts, John,. Oxford ; | New York : Oxford University Press, 2004 . xi, 318 p. : 23 cm.. 9780198293767 | 0198293763
]]>By Roberts, John.. Oxford : Oxford University Press, 2007 . xvi, 318 p. : , Includes bibliographical references (p. 289-302) and index. 22 cm.. 9780198293750
]]>By Foss, Nicolai J.. Oxford :. Oxford University Press, 2006 . ix, 304 p. : ; , Includes bibliographic details and index. 24 cm.. 0199205329
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