<p class='note'>
  <strong>#<%= note.number %></strong> <%= link_to strip_tags(markdown(note.text)), [@book, @chapter, note] %><br>
  <small>By <%= note.user.email %></small>
</p>

<p class='review_note'>
  <strong>#<%= note.number %></strong> <%= link_to strip_tags(markdown(note.text)), [@book, @chapter, note] %><br>
  <small>By <%= note.user.email %></small>
</p>

Change notes/_note class so that it doesn't conflict with book note
Change notes/_note class so that it doesn't conflict with book note
