Override page.tpl.php for content type node


I am using Bootstrap theme in D7. I’m creating page–front.tpl.php and page.tpl.php in my sub-theme.

I need to override page.tpl.php for one of my content type node display. My content type machine name is “latest_article”. I tried: node–latest_article.tpl.php , page–node–latest_article.tpl.php, latest_article.tpl.php , and many more. I tried flushing cache each time. None of these works. When I load the article, it still shows page.tpl.php that exists in sitesallthemesMySubthemetemplates.

What am I doing wrong? can anyone please help me.

Drupal version: 

Source: https://www.drupal.org/taxonomy/term/3/feed