Book class in a shared .NET Standard Library

Book.cs

public class Book
{
  public Book() {  }
  
  public Book(int bookId, string title, string publisher)
    => (BookId, Title, Publisher) = (bookId, title, publisher);

  public int BookId { get; set; }
  public string Title { get; set; }
  public string Publisher { get; set; }
  public override string ToString() => Title;
}