app/views/books/show.html.erb
<p id="notice"><%= notice %></p>
<p>
<strong>Isbn:</strong>
<%= @book.isbn %>
</p>
<p>
<strong>Title:</strong>
<%= @book.title %>
</p>
<p>
<strong>Description:</strong>
<%= @book.description %>
</p>
<p>
<strong>Pc image url:</strong>
<%= @book.pc_image_url %>
</p>
<p>
<strong>Mb image url:</strong>
<%= @book.mb_image_url %>
</p>
<p>
<strong>Category:</strong>
<%= @book.category %>
</p>
<%= link_to 'Edit', edit_book_path(@book) %> |
<%= link_to 'Back', books_path %>