Use \citetitle in one place.

Doc/lib/libpdb.tex

@@ -384,4 +384,4 @@ Note that as an exception is propagated down the chain of callers, an
 \code{'exception'} event is generated at each level.
 
 For more information on code and frame objects, refer to the
-\emph{Python Reference Manual}.
+\citetitle[../ref/ref.html]{Python Reference Manual}.

Doc/lib/libre.tex

@@ -686,7 +686,7 @@ The string passed to \function{match()} or \function{search()}.
 \end{memberdesc}
 
 \begin{seealso}
-\seetext{Jeffrey Friedl, \emph{Mastering Regular Expressions},
+\seetext{Jeffrey Friedl, \citetitle{Mastering Regular Expressions},
 O'Reilly.  The Python material in this book dates from before the
 \module{re} module, but it covers writing good regular expression
 patterns in great detail.}

Doc/lib/libsha.tex

@@ -48,7 +48,7 @@ A sha object has all the methods the md5 objects have, plus one:
 
 \begin{seealso}
   \seetext{The Secure Hash Algorithm is defined by NIST document FIPS
-           PUB 180-1: \emph{Secure Hash Standard}, published in April
+           PUB 180-1: \citetitle{Secure Hash Standard}, published in April
            of 1995.  It is available online as plain text at
            \url{http://csrc.nist.gov/fips/fip180-1.txt} (at least one
            diagram was omitted) and as PostScript at