Content in the BOMA content library can be shared via social media, email and as a blog on your website.
The only time you need to attribute the original source of the content is if you are copying an article to your blog.
If the article you choose has a call-to-action that takes you to a separate website (e.g. Xero's Small Business Guides) then you should attribute that as the original source.
Here's 2 examples of how you might cite the source or correctly attribute an article:
This post was originally published / written by XYZ and has been updated for freshness, accuracy, and comprehensiveness
The following content was originally published by XYZ. We have updated some of this article for our readers.