Remember that although AP Style is used by many different publications and media, it is FOR journalists writing news articles. As such, there really is no such thing as attribution to sources because that doesn't really occur in news writing. Instead, AP Style uses in-text attribution generally in the form of direct or indirect quotations.
"Revenues are up 10,000 percent," said
CEO John Smith.
According to SEC filings, company
revenues are up 10,000 percent.
The only exceptions within the AP Stylebook are Photo Captions where the format is (Publication/Photographer) -- (AP Photo/Bill Smith).
When attributing to a specific article, video or other piece of content on another site, it is generally recommended to link to the item, unless the content might be objectionable to readers.