Open the Google Doc

Choose File → Share → Publish to Web

A pop-over form will be displayed

Under Published content & settings near the bottom, make sure Automatically republish when changes are made is selected, which it is by default.

If the Google Doc is already published, There will be a “Stop publishing” link just below Published content & settings and a Link will be displayed

Click the Publish button

A pop-up will ask Are you sure you want to publish this Selection? Click on OK.

The pop-over form will briefly (hopefully) display a message saying it's Publishing…

When it says Published, select and copy the Link that is displayed. Note that the Link text extends well to the right of what is visible, so be careful to select all of it.

Paste the link into the wiki where you want it.

If you click on Embed next to Link, it will display HTML code to display the published Doc in an iframe.

Open the Google Sheet

Choose File → Share → Publish to Web

A pop-over form will be displayed

Under Published content & settings near the bottom, make sure Automatically republish when changes are made is selected, which it is by default.

If the Google Sheet is already published, There will be a “Stop publishing” link just below Published content & settings and a Link will be displayed

Click the Publish button

A pop-up will ask Are you sure you want to publish this Selection? Click on OK.

The pop-over form will briefly (hopefully) display a message saying it's Publishing…

When it says Published, select and copy the Link that is displayed. Note that the Link text extends well to the right of what is visible, so be careful to select all of it.

Paste the link into the wiki where you want it.

If you click on Embed next to Link, it will display HTML code to display the published Sheet in an iframe.