static void Main(string[] args) { StudentRepository repository = new StudentRepository(new IStudentSource()); List <Student> students = repository.getStudents(); University university = new University("CH.U.I."); university.SetStudents(students); Internship internship = new Internship("Interlink"); internship.AddUniversity(university); internship.SetStudents(); Console.WriteLine("List of internship's students:"); Console.WriteLine(internship.GetStudents()); }