Updated the reference page to properly italicize the title of the textbook

Abstract-Algebra-Theorems-and-Definitions.tex

@@ -19,7 +19,9 @@
 \begin{center}
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-	All theorems, corollaries, lemmas, remarks, and asides are direct quotes from Contemporary Abstract Algebra, 8th Edition, by Joseph A. Gallian
+	All theorems, corollaries, lemmas, remarks, and asides are direct quotes from\\
+
+	\textit{Contemporary Abstract Algebra, 8th Edition, by Joseph A. Gallian}
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 \end{center}
 \tableofcontents