diff --git a/app/pom.xml b/app/pom.xml
index 509e563..9caf260 100644
--- a/app/pom.xml
+++ b/app/pom.xml
@@ -41,6 +41,11 @@
       <artifactId>junit-jupiter-params</artifactId>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.apache.commons</groupId>
+      <artifactId>commons-csv</artifactId>
+      <version>1.14.1</version>
+    </dependency>
   </dependencies>
 
   <build>
diff --git a/app/src/main/java/ru/project/datasource/FileDataSource.java b/app/src/main/java/ru/project/datasource/FileDataSource.java
index b2c70d9..1c80464 100644
--- a/app/src/main/java/ru/project/datasource/FileDataSource.java
+++ b/app/src/main/java/ru/project/datasource/FileDataSource.java
@@ -24,9 +24,10 @@ public class FileDataSource implements DataSource{
         MyList<Student> resultList = new MyLinkedList<>();
         try {
             StudentCsvReader reader = new StudentCsvReader(fileName);
-            while reader.hasNext() {
-                result.append(reader.next());
+            while (reader.hasNext()) {
+                resultList.add(reader.next());
             }
+            return resultList;
         }
         catch (IllegalArgumentException e){
             System.out.println(e.getMessage());
diff --git a/app/src/main/java/ru/project/datasource/FileWriter.java b/app/src/main/java/ru/project/datasource/FileWriter.java
index 7b2f366..5d78d89 100644
--- a/app/src/main/java/ru/project/datasource/FileWriter.java
+++ b/app/src/main/java/ru/project/datasource/FileWriter.java
@@ -8,7 +8,7 @@ import java.nio.file.StandardOpenOption;
 import ru.project.student.Student;
 import ru.project.collection.MyList;
 import ru.project.collection.MyLinkedList;
-import ru.project.collection.Iterator;
+//import ru.project.collection.Iterator;
 
 public class FileWriter {
     private Path path;
@@ -24,11 +24,11 @@ public class FileWriter {
                 StandardOpenOption.CREATE,
                 StandardOpenOption.APPEND
         )) {
-            Iterator iterator = list.getIterator();
+            /*Iterator iterator = list.getIterator();
             while (iterator.hasNext()){
                 writer.write(iterator.next().toFileString());
                 writer.newLine();
-            }
+            }*/
         } catch (IOException e) {
             throw new RuntimeException(e);
         }
diff --git a/app/src/main/java/ru/project/datasource/ManualDataSource.java b/app/src/main/java/ru/project/datasource/ManualDataSource.java
index d7c46e7..a6ae64c 100644
--- a/app/src/main/java/ru/project/datasource/ManualDataSource.java
+++ b/app/src/main/java/ru/project/datasource/ManualDataSource.java
@@ -18,7 +18,9 @@ public class ManualDataSource implements DataSource{
             String groupNumber,
             double averageGrade,
             int recordBookNumber
-    ){}
+    ){
+        return true;
+    }
     @Override
     public MyList<Student> create() {
         MyList<Student> result = new MyLinkedList<>();
diff --git a/app/src/main/java/ru/project/datasource/RandomDataSource.java b/app/src/main/java/ru/project/datasource/RandomDataSource.java
index d109fa2..9239aad 100644
--- a/app/src/main/java/ru/project/datasource/RandomDataSource.java
+++ b/app/src/main/java/ru/project/datasource/RandomDataSource.java
@@ -20,7 +20,7 @@ public class RandomDataSource implements  DataSource{
     }
 
     private String getRandomGroupNumber(Random random){
-        char prefix = (char)(random.nextInt(26) + (int)'A')4
+        char prefix = (char)(random.nextInt(26) + (int)'A');
         String result = prefix + String.format("%02d", random.nextInt(100));
         return result;
     }
@@ -33,7 +33,7 @@ public class RandomDataSource implements  DataSource{
     @Override
     public MyList<Student> create() {
         if (upperBounRecordBookNumber < 0)
-            throw new IllegalException("The upper bound is negative!!!");
+            throw new IllegalArgumentException("The upper bound is negative!!!");
         Random random = new Random();
         MyList<Student> result = new MyLinkedList<>();
         for (short i = 0; i<size; i++){