How to embed google spreadsheet?

I'm trying to embed a google spreadsheet, but have not had any success. I have tried the GDOC code as described in BB Codes | PriusChat. However, it doesn't work (I'm assuming it is only for docs and not spreadsheets).

I searched the forum software provider and it looks like the functionality exists, but you may need to add it to the approved media sites:

BB Code Media Site support for Google Spreadsheets | XenForo Community

Let me know if there are other work arounds.