求解一个xslt转换的例子

[snow02203835]

现在有xslt转换出来的结果如下：


而我期待的效果是这样的，请问有什么办法可以解决嘛？


附代码：

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:fn="http://www.w3.org/2005/xpath-functions" xmlns:xdt="http://www.w3.org/2005/xpath-datatypes">
	<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
	<xsl:template match="bib">
		<results>
			<xsl:apply-templates/>
		</results>
	</xsl:template>
	<xsl:template match="book">
		<result>
			<xsl:apply-templates select="./author"/>
		</result>
	</xsl:template>
	<xsl:template match="author">
		<xsl:variable name="tests" select="./last"/>
		<xsl:copy>
			<xsl:copy-of select="./last"/>
			<xsl:copy-of select="./first"/>
		</xsl:copy>
        <xsl:call-template name="join">
            <xsl:with-param name="list" select="../../book/title" />
        </xsl:call-template>
	</xsl:template>
	<xsl:template name="join">
		<xsl:param name="list"/>
		<xsl:for-each select="$list">
			<title><xsl:value-of select="."/></title>
		</xsl:for-each>
	</xsl:template>
	<xsl:template match="title"/>
	<xsl:template match="publisher"/>
	<xsl:template match="price"/>
	<xsl:template match="editor"/>
</xsl:stylesheet>

<!DOCTYPE bib SYSTEM "bib.dtd">
<bib>
	<book year="1994">
		<title>TCP/IP Illustrated</title>
		<author>
			<last>Stevens</last>
			<first>W.</first>
		</author>
		<publisher>Addison-Wesley</publisher>
		<price> 65.95</price>
	</book>
	<book year="1992">
		<title>Advanced Programming in the Unix environment</title>
		<author>
			<last>Stevens</last>
			<first>W.</first>
		</author>
		<publisher>Addison-Wesley</publisher>
		<price>65.95</price>
	</book>
	<book year="2000">
		<title>Data on the Web</title>
		<author>
			<last>Abiteboul</last>
			<first>Serge</first>
		</author>
		<author>
			<last>Buneman</last>
			<first>Peter</first>
		</author>
		<author>
			<last>Suciu</last>
			<first>Dan</first>
		</author>
		<publisher>Morgan Kaufmann Publishers</publisher>
		<price>39.95</price>
	</book>
	<book year="1999">
		<title>The Economics of Technology and Content for Digital TV</title>
		<editor>
			<last>Gerbarg</last>
			<first>Darcy</first>
			<affiliation>CITI</affiliation>
		</editor>
		<publisher>Kluwer Academic Publishers</publisher>
		<price>129.95</price>
	</book>
</bib>