Displaying Two tables in the DataGrid

Hello Guys,

I am really struggling here to display both the results in my WPF Table.

Question: Get a list of all the titles and the authors who wrote them. Sort the results by title.

I have three tables in my Database, AuthorISBN, Authors and Titles.

AuthorsISBN has both the FK for the other two.

public partial class AuthorIsbn
{
public int AuthorId { get; set; }
public string Isbn { get; set; }
public virtual Authors Author { get; set; }
public virtual Titles IsbnNavigation { get; set; }
}

TITLES:

public partial class Titles
{
public Titles()
{
AuthorIsbn = new HashSet();
}
public string Isbn { get; set; }
public string Title { get; set; }
public int EditionNumber { get; set; }
public string Copyright { get; set; }
public virtual ICollection AuthorIsbn { get; set; }
}

AUTHORS:

public partial class Authors
{
public Authors()
{
AuthorIsbn = new HashSet();
}
public int AuthorId { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public virtual ICollection AuthorIsbn { get; set; }
}

In my WPF Application I have a DataGrid and when I press a button it displays the information, the problem is that it's only displaying information from one table, the Titles table.

var list1 = dbContext.Titles.Include(c => c.AuthorIsbn)
.ThenInclude(z => z.Author)
.OrderBy(b => b.Title);
myGrid.ItemsSource = list1.ToList();

What should I do for the DataGrid to display all the author info?

I would really appreciate your help!

Thanks!