Replace the codeblock command

exercises/references/references.code.done.tex

@@ -12,6 +12,6 @@ C\# is an object-oriented programming language that was developed by Microsoft i
 \begin{listing}[H]
 	\caption{A simple C\# program}
 	\label{lst:csharphelloworld}
-	\inputminted[breaklines, 
-	linenos=true]{csharp}{exercises/references/HelloLateXFriends.cs}
+	\lstset{language=csharp}
+	\lstinputlisting{exercises/references/HelloLateXFriends.cs}
 \end{listing}

exercises/references/references.raw.tex

@@ -8,8 +8,5 @@ C\# is an object-oriented programming language that was developed by Microsoft i
 
 The following source code listing shows a program that prints the text \enquote{Hello LaTeX friends!} to the console. Like Java, C\# makes use of classes and main methods to build executable applications. 
 
-\codeblock{csharp}{exercises/references/HelloLateXFriends.cs}
-
-
-
-
+\lstset{language=csharp}
+\lstinputlisting{exercises/references/HelloLateXFriends.cs}

exercises/references/task.tex

@@ -1,10 +1,6 @@
-In file \file{exercises/references/references.tex}, replace \enquote{in the 
-figure} and \enquote{the following source code listing} with suited references. 
-Use the command \code{latex}{\textbackslash cref}. Do not forget to first 
-introduce 
-labels for the elements that you want to reference. To do so, first of all, 
-wrap the source code listing in a \code{latex}{listing} environment. Also 
-insert a caption for the source code listing. 
+In file \file{exercises/references/references.tex}, replace \enquote{in the figure} and \enquote{the following source code listing} with suited references. 
+Use the command \code{latex}{\textbackslash cref}. Do not forget to first introduce labels for the elements that you want to reference. To do so, first of all, wrap the source code listing in a \code{latex}{listing} environment.
+Also, insert a caption for the source code listing. 
 Make sure to use suitable prefixes before the labels.
 
 \exercisematerial{exercises/references/references}