...
Visit the published page that you want to unpublish.
Click the Edit button in the lower right.
Scroll to the bottom of the page editor and set the Change to: state menu to Unpublish & Archive and click Save.
The yellow info bar above the page will show the new Moderation state: Unpublish & Archive
The page is no longer visible to the public.
To republish the page, see: Drupal: Edit a web page
IMPORTANT - Disable Unpublished Pages:
If you Unpublish a Drupal web page, please also disable any left Site Menu items that are linked to that page. See Drupal: Edit a Site Menu (Left Navigation).
...